Search this site
Embedded Files
Skip to main content
Skip to navigation
"Sansue" = Japanese Math for Kids V.2
Home
Contact Us
Exam.L1
ATOMIGAKUEN-2014
ATOMIGAKUEN-2014 /
JISSENJOSHIGAKUEN-2014
JISSENJOSHIGAKUEN-2014 /
JOHOKUSAITAMA-2014
JOHOKUSAITAMA-2014 /
JOSAIKAWAGOE-2014
JOSAIKAWAGOE-2014 /
KAMAKURAJOGAKUIN-2014
KAMAKURAJOGAKUIN-2014 /
NAKANO ATTACHED TO MEIJI UNIV.-2014
NAKANO ATTACHED TO MEIJI UNIV.-2014/
OTSUMA-2014
OTSUMA-2014 /
OTSUMA-2014
OTSUMA-2014/
RIKKYONIIZA-2008
RIKKYONIIZA-2008 /
SEIJO-2014
SEIJO-2014 /
SETAGAYAGAKUEN-2004
SETAGAYAGAKUEN-2004 /
TOHO-2014
TOHO-2014/
TOKYOCITYUNIV-2007
TOKYOCITYUNIV-2007 /
TOYOEIWA-2008
TOYOEIWA-2008 /
Exam.L2
AOYAMAGAKUIN-2010
AOYAMAGAKUIN-2010 /
ASANO-2010
ASANO-2010 /
JOHOKU-2008
JOHOKU-2008 /
KEIOCHUTOBU-2009
KEIOCHUTOBU-2009 /
KEIOFUTSUBU-2009
KEIOFUTSUBU-2009 /
KEIOSHONANFUJISAWA-2008
KEIOSHONANFUJISAWA-2008 /
LA SALLE-2008
LA SALLE-2008 /
LA SALLE-2009
LA SALLE-2009 /
MUSASHI-2009
MUSASHI-2009 /
SHIRAYURI-2014
SHIRAYURI-2014 /
Exam.L3
Azabu-1999
Azabu-1999 /
AZABU-2004
AZABU-2004 /
AZABU-2007
AZABU-2007 /
AZABU-2008
AZABU-2008 /
AZABU-2009
AZABU-2009 /
AZABU-2010
AZABU-2010 /
EIKO-2007
EIKO-2007 /
JOSHIGAKUIN-2008
JOSHIGAKUIN-2008 /
KAISEI-2007
KAISEI-2007 /
KAISEI-2009
KAISEI-2009 /
KOMABATOHO-2009
KOMABATOHO-2009 /
NADA-2003-Day1
NADA-2003-Day1 /
NADA-2003-Day2
NADA-2003-Day2 /
NADA-2004-Day1
NADA-2004-Day1 /
NADA-2005-Day1
NADA-2005-Day1 /
NADA-2006-Day1
NADA-2006-Day1 /
NADA-2007-Day1
NADA-2007-Day1 /
NADA-2009-Day1
NADA-2009-Day1 /
NDA-2003-Day2
OIN-2009
OIN-2009 /
SEIKOGAKUIN-2007
SEIKOGAKUIN-2007 /
TSUKUBAUNIV KOMABA-2001
TSUKUBAUNIV KOMABA-2001 /
Level 1
1 + 4 + 7 + 10 + ----- + 58 = ?
1 + 4 + 7 + 10 + ----- + 58 = ? /
100 m dash
100 m dash
100 m dash /
100 steps of escalator
100 steps of escalator /
111111111 x 111111111 = ?
111111111 x 111111111 = ? /
2/3 of 5 hours and 15 minutes
2/3 of 5 hours and 15 minutes /
2006 times multiple of two
2006 times multiple of two /
20th number of sequences
20th number of sequences /
50 times multiple of three
50 times multiple of three /
55 pieces of one and five yen coins
55 pieces of one and five yen coins /
70th number of sequences
70th number of sequences /
Add 5 or 2 to a integer to be multiple
Add 5 or 2 to a integer to be multiple /
Angle at 7:18
Angle at 7:18 /
Angle in a quadrangle
Angle in a quadrangle /
Another 100m dash
Another 100m dash /
Another three digits number of cards
Another three digits number of cards /
Area of shadow area in a circle
Area of shadow area in a circle /
Area of trapezoid
Area of trapezoid /
Area ratio of parallelogram and two triangles
Area ratio of parallelogram and two triangles /
Arrangement of ● and ○
Arrangement of ● and ○ /
Assemble development view
Assemble development view /
Assemble development view and water in
Assemble development view and water in /
Average speed
Average speed /
Bring all poles to one point
Bring all poles to one point /
Buy apple and orange
Buy apple and orange /
Calculation of measure of time
Calculation of measure of time /
Change of pondage of a dam
Change of pondage of a dam /
Change one yen coins to five and ten coins
Change one yen coins to five and ten coins /
Chess tournament of four people
Chess tournament of four people /
Circle and angle
Circle and angle /
Circle and square in a square
Circle and square in a square /
Circle and triangle
Circle and triangle /
Compare height of three mountains
Compare height of three mountains /
Concentration of salt solution after operation
Concentration of salt solution after operation /
Consumption tax inclusive price
Consumption tax inclusive price /
Crack chocolate bar
Crack chocolate bar /
Cutting a cylinder
Cutting a cylinder /
Decimals to be represented by fraction
Decimals to be represented by fraction /
Development view is square
Development view is square /
Difference of three clocks
Difference of three clocks /
Discounted price with no loss
Discounted price with no loss /
Distribution of three fruits
Distribution of three fruits /
Divide L character type figure
Divide L character type figure /
Divided by 4 and 5
Divided by 4 and 5 /
Divisible number of the product of integers
Divisible number of the product of integers /
Division of quadrangle
Division of quadrangle /
Division of triangle into six
Division of triangle into six /
Division to the 3rd decimal
Division to the 3rd decimal /
Drain away the water in the tank
Drain away the water in the tank /
Exchange rate of pound and won
Exchange rate of pound and won /
Exchange rate of Yen and US dollar
Exchange rate of Yen and US dollar /
Famous problem of bacteria
Famous problem of bacteria /
Fast clock and slow clock
Fast clock and slow clock /
Fish burning machine
Fish burning machine /
Five persons in the train
Five persons in the train /
Five persons standing in a line
Five persons standing in a line /
Five rectangles of same area
Five rectangles of same area /
Folding back of square
Folding back of square /
Four articles in four boxes with price tag
Four articles in four boxes with price tag /
Four children between parents
Four children between parents /
Four integers of two digit
Four integers of two digit /
Fraction between two fractions
Fraction between two fractions /
Fraction can not be reduced
Fraction can not be reduced /
Fraction denoted by the decimal
Fraction denoted by the decimal /
G.C.D. is 8
G.C.D. is 8 /
Give and take between two persons
Give and take between two persons /
Got over a pass
Got over a pass /
Hand out apples, oranges, and bananas
Hand out apples, oranges, and bananas /
Hand out presents to two of four persons
Hand out presents to two of four persons /
Hand out presents to two persons
Hand out presents to two persons /
Hexagonal column
Hexagonal column /
Home work plan in summer vacation
Home work plan in summer vacation /
How many liars in four ?
How many liars in four ? /
How many rectangles
How many rectangles /
Integer divided by 4 and 5
Integer divided by 4 and 5 /
Intersections with straight lines
Intersections with straight lines /
Janken and take marbles
Janken and take marbles /
Jiro pursue Taro
Jiro pursue Taro /
Length in quadrangle
Length in quadrangle /
Length in rectangle
Length in rectangle /
Length of extended toilet paper
Length of extended toilet paper /
Level1Drill
Day1
Level1Day1-Answer&Solution
List price discounted
List price discounted /
Magic square 3 x 3
Magic square 3 x 3 /
Magic square 3 x 3 (2)
Magic square 3 x 3 (2) /
Make a square of "go" stones
Make a square of "go" stones /
Merger of three towns
Merger of three towns /
Move half distance of before
Move half distance of before /
Move water among three tanks
Move water among three tanks /
No pair of two persons
No pair of two persons /
Number added to be over 1000 of the sum
A1 Number added to be over 1000 of the sum /
Number of 50th decimal place
Number of 50th decimal place /
Number of bottles filled with water
Number of bottles filled with water /
Number of games of round-robin tournament
Number of games of round-robin tournament /
Number of games of tournament game
Number of games of tournament game /
Number of steps and length of stride
Number of steps and length of stride /
Number of successive victories
Number of successive victories /
Number of work days of three machines
Number of work days of three machines /
Operation of integers
Operation of integers /
Operation with fraction (distribution)
Operation with fraction (distribution) /
Overlapped sector and trapezoid
Overlapped sector and trapezoid /
Overlapped triangle and pentagon
Overlapped triangle and pentagon /
Overlapped two triangles
Overlapped two triangles /
Paint four places by four colors
Paint four places by four colors /
Paint four places by three colors
Paint four places by three colors /
Pair of two persons
Pair of two persons /
Paper tape around the equator of the earth
Paper tape around the equator of the earth /
Partition and area of trapezoid
Partition and area of trapezoid /
Partition of parallelogram
Partition of parallelogram /
Partition of parallelogram, homothetic
Partition of parallelogram, homothetic /
Partition of rectangle
Partition of rectangle /
Partition of trapezoid
Partition of trapezoid /
Partition of triangle
Partition of triangle /
Passing each other of trains
Passing each other of trains /
Pole in the water
Pole in the water /
Price of pork at butcher
Price of pork at butcher /
Problems
Answers and solutions
Product of numbers of two spots of dice
Product of numbers of two spots of dice /
Product of two integers is 44448888
Product of two integers is 44448888 /
Product sold at three stores
Product sold at three stores /
Quadrangle and angle
Quadrangle and angle /
Questionnaire to 41 students
Questionnaire to 41 students /
Quotient of A/B is smaller than X
Quotient of A/B is smaller than X /
Ratio of weight and number of balls
Ratio of weight and number of balls /
Rearrangement of ten coins
Rearrangement of ten coins /
Reduce the speed on the way
Reduce the speed on the way /
Relationship of three integers (distribution)
Relationship of three integers (distribution) /
Repack oranges in the bag
Repack oranges in the bag /
Represent 9 by sum of three integers
Represent 9 by sum of three integers /
Rotation of square
Rotation of square /
Sales change in three months
Sales change in three months /
Sales number in three months
Sales number in three months /
Salt solutions in two beakers
Salt solutions in two beakers /
Same depth of the water in the vessel
Same depth of the water in the vessel /
Same remainder when three integers divided
Same remainder when three integers divided /
Sequence without multiple of 3 or 5
Sequence without multiple of 3 or 5 /
Sequences of numbers of 1, 2, 3
Sequences of numbers of 1, 2, 3 /
Share one cake
Share one cake /
Shift of decimal point
Shift of decimal point /
Ship move back and forth river
Ship moves back and forth river /
Solid made by rotation
Solid made by rotation /
Speed of a car
Speed of a car /
Speed ratio of two persons
Speed ratio of two persons /
Square with black and white stones
Square with black and white stones /
Stakes to the perimeter of the rectangle
Stakes to the perimeter of the rectangle /
Steps of mother and child
Steps of mother and child /
String around the corn
String around the corn /
Sum and product of three integers
Sum and product of three integers /
Sum of 16 consecutive integers
Sum of 16 consecutive integers /
Sum of numbers of two spots of dice
Sum of numbers of two spots of dice /
Sum of odd number and even number
Sum of odd number and even number /
Sum of seven continuous integers
Sum of seven continuous integers /
Sweets sold at a candy store
Sweets sold at a candy store /
Test scores of five persons
Test scores of five persons /
The volume when water freezes
The volume when water freezes /
Three digit integer divide 1570
Three digit integer divide 1570 /
Three digits number out of four cards
Three digits number out of four cards
Three empty bottles for new bottle
Three empty bottles for new bottle /
Three kinds of fruit for children
Three kinds of fruit for children /
Three needles in a disk
Three needles in a disk /
Three persons running around the pond
Three persons running around the pond /
Three persons' 100m race in pairs
Three persons' 100m race in pairs /
Time going up by elevator
Time going up by elevator /
Time of overlapping
Time of overlapping /
Time of raining
Time of raining /
Time of straight line
Time of straight line /
Train moves among three stations
Train moves among three stations /
Trees planted along the road
Trees planted along the road /
Triangle and angle
Triangle and angle /
Triangle and three circles
Triangle and three circles /
Two bicycles in a tunnel
Two bicycles in a tunnel /
Two fractions whose numerator is 1
Two fractions whose numerator is 1 /
Volume ratio of alcohol
Volume ratio of alcohol /
Walk around the pond
Walk around the pond /
Walk on another escalator
Walk on another escalator /
Walk on the escalator
Walk on the escalator /
Water pumped out of tank
Water pumped out of tank /
Weight of log
Weight of log /
Weight of the salt solution
Weight of the salt solution /
What day of the month
What day of the month /
What day of the week
What day of the week /
What day of the week six years later
What day of the week six years later /
White and black stones
White and black stones /
Work done by two persons
Work done by two persons /
Wrong scale of tape measures
Wrong scale of tape measures /
Level 2
"Janken" game among three persons
"Janken" game among three persons /
1/12 = 1/x + 1/y
1/12 = 1/x + 1/y /
100th anniversary day of foundation
100th anniversary day of foundation /
12 points on a circumference
12 points on a circumference /
13 persons ordered one confectionery and drink
13 persons ordered one confectionery and drink /
1989 expressed by continuous integers
1989 expressed by continuous integers /
200---07 divisible by 27 and 81
200---07 divisible by 27 and indivisible by 81 /
200---07 divisible by 27 and indivisible by 81
200---07 divisible by 27 and indivisible by 81 /
27 pieces of gold coin
<Deleted> Four different volume of iron balls
Four different volume of iron balls /
A circle moves around a figure
A circle moves around a figure /
Accumulated cubes and paint
Accumulated cubes and paint /
Add 3 or 8 to a number
Add 3 or 8 to a number /
Admission ticket of a theater
Admission ticket of a theater /
Another cut line on the development view
Another cut line on the development view /
Another partition of right hexagon
Another partition of right hexagon /
Another sharing six oranges
Another sharing six oranges /
Another triathlon race
Another triathlon race /
Area ratio of parallelogram
Area ratio of parallelogram /
Area ratio of square and triangle
Area ratio of square and triangle
Area ratio of square and triangle
Area ratio of square and triangle /
Area ratio of triangles
Area ratio of triangles /
Arrange three numbers and alphabet
Arrange three numbers and alphabet /
Arrangement of numbers and alphabets
Arrangement of numbers and alphabets /
Arrangement of numbers based on rules
Arrangement of numbers based on rules /
Assemble development view
Assemble development view /
Bagging work by three persons
Bagging work by three persons /
Bending paper tape right-angled
Bending paper tape right-angled /
Board on the roller
Board on the roller /
Bring balls to moving dray
Bring balls to moving dray /
Carry an iron plate
Carry an iron plate /
Carry water to cart
Carry water to cart /
Change direction at every meeting
Change direction at every meeting /
Change speed to catch up
Change speed to catch up /
Choose number from 1 to 10 by turns
Choose number from 1 to 10 by turns /
Coin rotating around another coin
Coin rotating around another coin /
Combination of five equilateral triangles
Combination of five equilateral triangles /
Combination of two right triangles
Combination of two right triangles /
Combining small equilateral triangles to be large one
Combining small equilateral triangles to be large one
Combining small equilateral triangles to be large one /
Congruent two sectors
Congruent two sectors /
Connect red tapes and white tapes
Connect red tapes and white tapes /
Connecting three points to be triangle
Connecting three points to be triangle /
Cows in the pasture
Cows in the pasture /
Cut cube to be development view
Cut cube to be development view /
Cut line on the development view
Cut line on the development view /
Cut squares out of rectangular paper
Cut squares out of rectangular paper /
Development view of cube
Development view of cube /
Development view of cube with numbers
Development view of cube with numbers /
Development view of quadrangular pyramid
Development view of quadrangular pyramid /
Development view of rectangular prism
Development view of rectangular prism /
Difference of total surface area
Difference of total surface area /
Discounted ticket price
Discounted ticket price /
Disk rolls around another disk
Disk rolls around another disk /
Distribution of seeds of flower
Distribution of seeds of flower /
Distribution of seeds of flower
Divide hexagon
Divide hexagon /
Divide quarter sector into 36 portion
Divide quarter sector into 36 portion /
Divide rectangle into three figures
Divide rectangle into three figures /
Divide three numbers by the same number
Divide three numbers by the same number /
Division of square
Division of square /
Donation by three persons
Donation by three persons /
Election of the president of student council
Election of the president of student council /
Election of three committees
Election of three committees /
Exchange salt solution between two
Exchange salt solution between two /
Extension of sides of quadrangle
Extension of sides of quadrangle /
Extension of three sides of triangle
Extension of three sides of triangle /
Figure in two circles attached
Figure in two circles attached /
Find a bag of fake gold coins
Find a bag of fake gold coins /
Find a fake gold coin
Find a fake gold coin /
Find one heavy ball by even balance
Find one heavy ball by even balance /
Find the number of honest person
Find the number of honest person /
Find two cakes among three
Find two cakes among three /
Fixed and proportional rate to send package
Fixed and proportional rate to send package /
Fold a circle twice and open
Fold a circle twice and open /
Fold a rectangular paper
Fold a rectangular paper /
Fold and cut a rectangular paper
Fold and cut a rectangular paper /
Fold newspaper 20 times
Fold newspaper 20 times /
Folded and flattened paper tape
Folded and flattened paper tape /
Four animals on a rectangle
Four animals on a rectangle
Four animals on a rectangle /
Four empty bottles for one new bottle
Four empty bottles for one new bottle /
Four figures containing 5
Four figures containing 5 /
Four numbers in square cards
Four numbers in square cards /
Four points on the side of rectangle
Four points on the side of rectangle /
Four sectors in a square
Four sectors in a square /
Four solids in water tank
Four solids in water tank /
Four wins and three losses at World Series
Four wins and three losses at World Series /
Game walking around a pond
Game walking around a pond /
Gather flower petals in a schoolyard
Gather flower petals in a schoolyard /
Gather flower petals in a schoolyard
Go forth by three steps and back by two steps
Go forth by three steps and back by two steps /
Go to another town by bicycle and on foot
Go to another town by bicycle and on foot /
Graph of distance of two persons
Graph of distance of two persons /
Guess the color of the card
Guess the color of the card /
Guess the color of the hut wearing
Guess the color of the hut wearing /
Guess what I'm thinking
Guess what I'm thinking /
Hexagon is divided by two diagonal lines
Hexagon is divided by two diagonal lines /
Homework of summer vacation
Homework of summer vacation /
How many numbers of 0 in the product
How many numbers of 0 in the product /
How old am I now?
How old am I now? /
I was born in ABCD
I was born in ABCD /
Insect moving along the side of solid
Insect moving along the side of solid /
Integer divided by 4, 5, 7 with some remainder
Integer divided by 4, 5, 7 with some remainder /
Integers of remainder one divided by three
Integers of remainder one divided by three /
Length in a triangle
Length in a triangle /
Length of a candle
Length of a candle /
Library between school and station
Library between school and station /
Load dropped to a river from ship
Load dropped to a river from ship /
Long hand and hour hand of flower clock
Long hand and hour hand of flower clock /
Long-distance train
Long-distance train /
Machine displays numbers of two digits
Machine displays numbers of two digits /
Make big equilateral triangle by putting small ones
Make big equilateral triangle by putting small ones /
Make formula using 3 four times
Make formula using 3 four times /
Make right hexagon of parallelograms and trapezoids
Make right hexagon of parallelograms and trapezoids /
Management of the party
Management of the party /
Move of the side of regular tetrahedron
Move of the side of regular tetrahedron /
Movement of rectangle overlapping triangle
Movement of rectangle overlapping triangle /
Moving by running and a car
Moving by running and a car /
Moving point on the side of rectangle
Moving point on the side of rectangle /
Multiple of each number of digit
Multiple of each number of digit /
Multiple of even numbers
Multiple of even numbers /
Multiply 27 50 times
Multiply 27 50 times /
No multiple of 9 and no 9 in any digit
No multiple of 9 and no 9 in any digit /
No number as a price including tax
No number as a price including tax /
Notice an article left behind
Notice an article left behind /
Number and cost price of apple
Number and cost price of apple /
Number of days of Friday 13th
Number of days of Friday 13th /
Number of sheets of origami
Number of sheets of origami /
Number of sheets of origami crane
Number of sheets of origami crane
Number of spots of dice
Number of spots of dice /
Number of steps to catch up
Number of steps to catch up /
Number of teams are multiples of two in tournament
Number of teams are multiples of two in tournament /
Number of times divided by 3
Number of times divided by 3
Number of times divided by 3 /
Number of ways from P to A
Number of ways from P to A /
Number to buy to drink 100 bottles
Number to buy to drink 100 bottles /
Numbers of stone taken out to make pair
Numbers of stone taken out to make pair /
Numbers with no 4
Numbers with no 4 /
One integer added to 12 after another
One integer added to 12 after another /
One number after another is multiplied from 1
One number after another is multiplied from 1 /
One water feeding pipe and two draining pipes
One water feeding pipe and two draining pipes /
Operational rule of integers
Operational rule of integers /
Overlapped right angle triangles
Overlapped right angle triangles /
Overlapped two circles and rectangle
Overlapped two circles and rectangle
Overlapping of rectangle and circle
Overlapping of rectangle and circle /
Paper tape is cut at 3, 5, 7 equal parts
Paper tape is cut at 3, 5, 7 equal parts /
Partition in a water tank
Partition in a water tank /
Partition of a circle
Partition of a circle /
Partition of parallelogram to find area
Partition of parallelogram to find area /
Partition of rectangle and three points
Partition of rectangle and three points /
Partition of right hexagon
Partition of right hexagon /
Partition of square
Partition of square /
Partition of trapezoid
Partition of trapezoid /
Partition of trapezoid to be triangle
Partition of trapezoid to be triangle /
Pass money among three persons
Pass money among three persons /
Pass traffic jam section
Pass traffic jam section /
Passing every five minutes
Passing every five minutes /
Pile up cubes on a square mat board
Pile up cubes on a square mat board /
Piled up two-face coins
Piled up two-face coins /
Play at dice using figure
Play at dice using figure /
Price of consumption tax included
Price of consumption tax included /
Product of two integers is 44448888
Product of two integers is 44448888 /
Projection view of solid
Projection view of solid /
Put in soy sauce by 1L
Put in soy sauce by 1L /
Put in soy sauce by 1L /
Put two rectangular prism into water
Put two rectangular prism into water /
Quotient and remainder are same
Quotient and remainder are same /
Rabbits in the hut
Rabbits in the hut /
Ranking of shogi game among three
Ranking of shogi game among three /
Ratio of area and length of sides
Ratio of area and length of sides
Rearrangement of 12 cards
Rearrangement of 12 cards /
Remain 5L in 7L vessel
Remain 5L in 7L vessel /
Repeat operation of integers
Repeat operation of integers /
Replacement of long and hour hand
Replacement of long and hour hand /
Replacement of long and hour hand (3 steps)
Replacement of long and hour hand, 3 steps
Rope going around the earth
Rope going around the earth /
Rotate triangle around a rectangle
Rotate triangle around a rectangle /
Rotation of a triangle
Rotation of a triangle /
Round trip of the mountain path
Round trip of the mountain path /
Round-robin tournament in five teams
Round-robin tournament in five teams /
Rounded book
Rounded book /
Run around the pond
Run around the pond /
Same departure time of two trains
Same departure time of two trains /
Seats of six persons
Seats of six persons /
Sequence of integers after separation of each digit
Sequence of integers after separation of each digit /
Sequences on a certain condition
Sequences on a certain condition /
Sequences on a certain rule
Sequences on a certain rule /
Set of apple and orange juice
Set of apple and orange juice /
Shadow of quadratic prism
Shadow of quadratic prism /
Share oranges with several persons
Share oranges with several persons /
Share six oranges with four persons
Share six oranges with four persons /
Shortest line on solid
Shortest line on solid /
Six digits integer
Six digits integer /
Six light bulbs
Six light bulbs
Six light bulbs /
Six squares overlap sectors
Six squares overlap sectors /
Skip every 2 piece on the stones around a pond
Skip every 2 piece on the stones around a pond /
Solid made by cutting quadrangular pyramid
Solid made by cutting quadrangular pyramid /
Solid of revolution of trapezoid
Solid of revolution of trapezoid /
Solid with eight equilateral triangles
Solid with eight equilateral triangles /
Special digital clock
Special digital clock /
Speed ratio is 7 : 5
Speed ratio is 7 : 5 /
Speed ratio of two persons
Speed ratio of two persons /
Square in the right triangle
Square in the right triangle /
Steam whistle from steam train
Steam whistle from steam train /
Straight lines with certain angles
Straight lines with certain angles /
Suitable lid for vessel
Suitable lid for vessel /
Sum of each digit is 10
Sum of each digit is 10 /
Sum of fractions whose numerator is 1
Sum of fractions whose numerator is 1 /
Sum of number of spots of dice
Sum of number of spots of dice /
Sum of three integers is 1000
Sum of three integers is 1000 /
Sum of two integers is divided by G.C.D.
Sum of two integers is divided by G.C.D. /
Take out 50kg gold dust
Take out 50kg gold dust /
Take out three kind of ball
Take out three kind of ball /
Talk a rumor to ten persons
Talk a rumor to ten persons /
Telephone rate of two companies
Telephone rate of two companies /
Ten cars passing on the highway
Ten cars passing on the highway /
Test of four questions
Test of four questions
Test of ten problems of O or X
Test of ten problems of O or X /
Test of three problems
Test of three problems /
Three angles in two figures
Three angles in two figures /
Three cylinders in water tank
Three cylinders in water tank /
Three digit integers divided by 35 and 40
Three digit integers divided by 35 and 40
Three digit integers divided by 35 and 40 /
Three persons from home to a park
Three persons from home to a park /
Three persons in the train
Three persons in the train /
Three persons read books with different pages
Three persons read books with different pages /
Three persons run in the school ground
Three persons run in the school ground /
Three persons start at different time
Three persons start at different time /
Three persons take out red and white ball
Three persons take out red and white ball /
Three pieces among red, blue, and black
Three pieces among red, blue, and black /
Three points moving on three circles
Three points moving on three circles /
Time of passing each other
Time one passed another
Time one passed another /
Time when passing each other
Time when passing each other /
Tournament games of soccer in 7 teams
Tournament games of soccer in 7 teams /
Tournament of soccer in eight teams
Tournament of soccer in eight teams /
Town on the top of mountain
Town on the top of mountain /
Transformation of formula
Transformation of formula /
Trapezoid and three sectors
Trapezoid and three sectors /
Travel distance and railway fare
Travel distance and railway fare /
Triangle and trapezoid
Triangle and trapezoid /
Triangle in hexagon
Triangle in hexagon /
Triangle in rectangle
Triangle in rectangle /
Triangular pyramid from rectangular paper
Triangular pyramid from rectangular paper /
Triathlon race
Triathlon race /
Two circles with a shaded area
Two circles with a shaded area /
Two different styles of moving
Two different styles of moving /
Two persons go to house each other
Two persons go to house each other /
Two persons meet and janken
Two persons meet and janken /
Two persons move on a rectangle
Two persons move on a rectangle /
Two persons moving around a pond
Two persons moving around a pond /
Two persons roll a die
Two persons roll a die /
Two persons' moving by bicycle
Two persons' moving by bicycle /
Two points between school and park
Two points between school and park /
Two points moving on a diameter
Two points moving on a diameter /
Two squares and one circle
Two squares and one circle /
Two way speed walking on the escalator
Two way speed walking on the escalator /
Visitors' line at aquarium
Visitors' line at aquarium /
Walk along riverside and ship in the river
Walk along riverside and ship in the river /
Walk on 40 steps escalator
Walk on 40 steps escalator /
Walk to the next bus stop
Walk to the next bus stop /
Walking and running around a pond
Walking and running around a pond /
Water and wine in two vessels
Water and wine in two vessels /
Water into three tanks
Water into three tanks /
Water moves in three tanks
Water moves in three tanks /
Which house is whose
Which house is whose /
Whistle from express train
Whistle from express train /
Year of Showa era and A.D.
Year of Showa era and A.D. /
Level 3
365 cards with date of one year
365 cards with date of one year /
Area ratio divided in parallelogram
Area ratio divided in parallelogram /
Area ratio divided in parallelogram
Area ratio divided in sector
Area ratio divided in sector /
Area ratio divided in triangle
Area ratio divided in triangle /
Arrangement of squares in order
Arrangement of squares in order /
Candies for children gathering
Candies for children gathering /
Change of gas rate in several months
Change of gas rate in several months /
Circle moving around a figure
Circle moving around a figure /
Circle moving around hexagon
Circle moving around hexagon /
Compare area of black and white square
Compare area of black and white square /
Connected parallelograms
Connected parallelograms /
Cut another quadrangular pyramid
Cut another quadrangular pyramid /
Cut piling up eight cubes
Cut piling up eight cubes /
Cut rectangular prism with planes parallel to faces
Cut rectangular prism with planes parallel to faces /
Cut right quadrangular pyramid
Cut right quadrangular pyramid /
Cut surface of cube
Cut surface of cube /
Cutting line based on development view
Cutting line based on development view /
Development view of solid with six faces of lozenge
Development view of solid with six faces of lozenge /
Election of class representative
Election of class representative /
Find the road to paradise
Find the road to paradise /
Find the way to go
Find the way to go /
Going back and forth two points
Going back and forth two points /
Hollowing out rectangular prism
Hollowing out rectangular prism /
Hour hand, minute hand and second hand
Hour hand, minute hand and second hand /
Lottery of "Amidakuji"
Lottery of "Amidakuji" /
Multiple of continued integers
Multiple of continued integers /
Multiple of every number of each digit
Multiple of every number of each digit /
Number of cut to make development view
Number of cut to make development view /
Number of dice to be cut or not
Number of dice to be cut or not /
Number of inverse order
Number of inverse order /
Number of songs at concerts
Number of songs at concerts /
Overlapping hexagon and heptagon
Overlapping hexagon and heptagon /
Paint inside of rectangular prism
Paint inside of rectangular prism /
Partition of right triangle
Partition of right triangle /
Piling up cubes and cut
Piling up cubes and cut /
Piling up cubes and put red seals
Piling up cubes and put red seals /
Put 1~8 in a frame
Put 1~8 in a frame /
Put 48 balls into five boxes
Put 48 balls into five boxes /
Put water in four vessels
Put water in four vessels /
Questionnaire on three subjects
Questionnaire on three subjects /
Quotient is rounded off at 1st decimal place
Quotient is rounded off at 1st decimal place /
Rectangle moves and overlaps triangle
Rectangle moves and overlaps triangle /
Rectangular prism and triangular pyramid
Rectangular prism and triangular pyramid /
Reflection in rectangle
Reflection in rectangle /
Removing cards based on the rule
Removing cards based on the rule /
Replacement of long hand and hour hand
Replacement of long hand and hour hand /
Right dodecagon
Right dodecagon /
Same birthday in the class of 50 people
Same birthday in the class of 50 people /
Shadow of block by streetlight
Shadow of block by streetlight /
Shadow of box by stand light
Shadow of box by stand light /
Shadow of rectangular wall
Shadow of rectangular wall /
Solid made by cutting cylinder
Solid made by cutting cylinder /
Square moves in a triangle
Square moves in a triangle /
Square pyramid and homothetic ratio
Square pyramid and homothetic ratio /
Straight line dividing figure into three
Straight line dividing figure into three /
Sum total of every number of each digit
Sum total of every number of each digit /
Table of integers written clockwise
Table of integers written clockwise /
Take out balls from the bag
Take out balls from the bag /
Tape winded around rectangular board
Tape winded around rectangular board /
Taxi fare of two types of cars
Taxi fare of two types of cars /
Ten students roll three dice
Ten students roll three dice /
The 3rd hand on a circular clock
The 3rd hand on a circular clock /
Three blue cards and five red cards
Three blue cards and five red cards /
Three persons moving on a circular pond
Three persons moving on a circular pond /
Three points moving on a circumference
Three points moving on a circumference /
Three points moving on a rectangle
Three points moving on a rectangle /
Time of display of crossing for trains
Time of display of crossing for trains /
Triangle covered by squares
Triangle covered by squares /
Triangle of integers written counterclockwise
Triangle of integers written counterclockwise /
Two circles moving in triangle
Two circles moving in triangle /
Two machines displaying numbers on the rule
Two machines displaying numbers on the rule /
Two persons moving on an annular road
Two persons moving on an annular road /
Two persons walking on a moving walkway
Two persons walking on a moving walkway /
Two points moving in a square
Two points moving in a square /
Vessel, water and bar
Vessel, water and bar /
Volleyball tournament of five teams
Volleyball tournament of five teams /
Volume ratio after cutting rectangular prism
Volume ratio after cutting rectangular prism /
Way of putting spots on the die
Way of putting spots on the die /
Level 4
Image solid from development view
Image solid from development view /
Round the 3rd digit from the top of number
Round the 3rd digit from the top of number /
New Drill
Photo
Google +
Mt. Fuji
Photo/Movies
Updates
DD23 updated
DD29 updated
DDD8 updated
Exam.L1 updated
Exam.L1 Updated
Exam.L1 updated
Exam.L1 Updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 Updated
Exam.L2 undated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3. updated
II17 is deleted
KK.14 is deleted
New problems
Problems of Level 1~3 are posted
"Sansue" = Japanese Math for Kids V.2
Home
Contact Us
Exam.L1
ATOMIGAKUEN-2014
ATOMIGAKUEN-2014 /
JISSENJOSHIGAKUEN-2014
JISSENJOSHIGAKUEN-2014 /
JOHOKUSAITAMA-2014
JOHOKUSAITAMA-2014 /
JOSAIKAWAGOE-2014
JOSAIKAWAGOE-2014 /
KAMAKURAJOGAKUIN-2014
KAMAKURAJOGAKUIN-2014 /
NAKANO ATTACHED TO MEIJI UNIV.-2014
NAKANO ATTACHED TO MEIJI UNIV.-2014/
OTSUMA-2014
OTSUMA-2014 /
OTSUMA-2014
OTSUMA-2014/
RIKKYONIIZA-2008
RIKKYONIIZA-2008 /
SEIJO-2014
SEIJO-2014 /
SETAGAYAGAKUEN-2004
SETAGAYAGAKUEN-2004 /
TOHO-2014
TOHO-2014/
TOKYOCITYUNIV-2007
TOKYOCITYUNIV-2007 /
TOYOEIWA-2008
TOYOEIWA-2008 /
Exam.L2
AOYAMAGAKUIN-2010
AOYAMAGAKUIN-2010 /
ASANO-2010
ASANO-2010 /
JOHOKU-2008
JOHOKU-2008 /
KEIOCHUTOBU-2009
KEIOCHUTOBU-2009 /
KEIOFUTSUBU-2009
KEIOFUTSUBU-2009 /
KEIOSHONANFUJISAWA-2008
KEIOSHONANFUJISAWA-2008 /
LA SALLE-2008
LA SALLE-2008 /
LA SALLE-2009
LA SALLE-2009 /
MUSASHI-2009
MUSASHI-2009 /
SHIRAYURI-2014
SHIRAYURI-2014 /
Exam.L3
Azabu-1999
Azabu-1999 /
AZABU-2004
AZABU-2004 /
AZABU-2007
AZABU-2007 /
AZABU-2008
AZABU-2008 /
AZABU-2009
AZABU-2009 /
AZABU-2010
AZABU-2010 /
EIKO-2007
EIKO-2007 /
JOSHIGAKUIN-2008
JOSHIGAKUIN-2008 /
KAISEI-2007
KAISEI-2007 /
KAISEI-2009
KAISEI-2009 /
KOMABATOHO-2009
KOMABATOHO-2009 /
NADA-2003-Day1
NADA-2003-Day1 /
NADA-2003-Day2
NADA-2003-Day2 /
NADA-2004-Day1
NADA-2004-Day1 /
NADA-2005-Day1
NADA-2005-Day1 /
NADA-2006-Day1
NADA-2006-Day1 /
NADA-2007-Day1
NADA-2007-Day1 /
NADA-2009-Day1
NADA-2009-Day1 /
NDA-2003-Day2
OIN-2009
OIN-2009 /
SEIKOGAKUIN-2007
SEIKOGAKUIN-2007 /
TSUKUBAUNIV KOMABA-2001
TSUKUBAUNIV KOMABA-2001 /
Level 1
1 + 4 + 7 + 10 + ----- + 58 = ?
1 + 4 + 7 + 10 + ----- + 58 = ? /
100 m dash
100 m dash
100 m dash /
100 steps of escalator
100 steps of escalator /
111111111 x 111111111 = ?
111111111 x 111111111 = ? /
2/3 of 5 hours and 15 minutes
2/3 of 5 hours and 15 minutes /
2006 times multiple of two
2006 times multiple of two /
20th number of sequences
20th number of sequences /
50 times multiple of three
50 times multiple of three /
55 pieces of one and five yen coins
55 pieces of one and five yen coins /
70th number of sequences
70th number of sequences /
Add 5 or 2 to a integer to be multiple
Add 5 or 2 to a integer to be multiple /
Angle at 7:18
Angle at 7:18 /
Angle in a quadrangle
Angle in a quadrangle /
Another 100m dash
Another 100m dash /
Another three digits number of cards
Another three digits number of cards /
Area of shadow area in a circle
Area of shadow area in a circle /
Area of trapezoid
Area of trapezoid /
Area ratio of parallelogram and two triangles
Area ratio of parallelogram and two triangles /
Arrangement of ● and ○
Arrangement of ● and ○ /
Assemble development view
Assemble development view /
Assemble development view and water in
Assemble development view and water in /
Average speed
Average speed /
Bring all poles to one point
Bring all poles to one point /
Buy apple and orange
Buy apple and orange /
Calculation of measure of time
Calculation of measure of time /
Change of pondage of a dam
Change of pondage of a dam /
Change one yen coins to five and ten coins
Change one yen coins to five and ten coins /
Chess tournament of four people
Chess tournament of four people /
Circle and angle
Circle and angle /
Circle and square in a square
Circle and square in a square /
Circle and triangle
Circle and triangle /
Compare height of three mountains
Compare height of three mountains /
Concentration of salt solution after operation
Concentration of salt solution after operation /
Consumption tax inclusive price
Consumption tax inclusive price /
Crack chocolate bar
Crack chocolate bar /
Cutting a cylinder
Cutting a cylinder /
Decimals to be represented by fraction
Decimals to be represented by fraction /
Development view is square
Development view is square /
Difference of three clocks
Difference of three clocks /
Discounted price with no loss
Discounted price with no loss /
Distribution of three fruits
Distribution of three fruits /
Divide L character type figure
Divide L character type figure /
Divided by 4 and 5
Divided by 4 and 5 /
Divisible number of the product of integers
Divisible number of the product of integers /
Division of quadrangle
Division of quadrangle /
Division of triangle into six
Division of triangle into six /
Division to the 3rd decimal
Division to the 3rd decimal /
Drain away the water in the tank
Drain away the water in the tank /
Exchange rate of pound and won
Exchange rate of pound and won /
Exchange rate of Yen and US dollar
Exchange rate of Yen and US dollar /
Famous problem of bacteria
Famous problem of bacteria /
Fast clock and slow clock
Fast clock and slow clock /
Fish burning machine
Fish burning machine /
Five persons in the train
Five persons in the train /
Five persons standing in a line
Five persons standing in a line /
Five rectangles of same area
Five rectangles of same area /
Folding back of square
Folding back of square /
Four articles in four boxes with price tag
Four articles in four boxes with price tag /
Four children between parents
Four children between parents /
Four integers of two digit
Four integers of two digit /
Fraction between two fractions
Fraction between two fractions /
Fraction can not be reduced
Fraction can not be reduced /
Fraction denoted by the decimal
Fraction denoted by the decimal /
G.C.D. is 8
G.C.D. is 8 /
Give and take between two persons
Give and take between two persons /
Got over a pass
Got over a pass /
Hand out apples, oranges, and bananas
Hand out apples, oranges, and bananas /
Hand out presents to two of four persons
Hand out presents to two of four persons /
Hand out presents to two persons
Hand out presents to two persons /
Hexagonal column
Hexagonal column /
Home work plan in summer vacation
Home work plan in summer vacation /
How many liars in four ?
How many liars in four ? /
How many rectangles
How many rectangles /
Integer divided by 4 and 5
Integer divided by 4 and 5 /
Intersections with straight lines
Intersections with straight lines /
Janken and take marbles
Janken and take marbles /
Jiro pursue Taro
Jiro pursue Taro /
Length in quadrangle
Length in quadrangle /
Length in rectangle
Length in rectangle /
Length of extended toilet paper
Length of extended toilet paper /
Level1Drill
Day1
Level1Day1-Answer&Solution
List price discounted
List price discounted /
Magic square 3 x 3
Magic square 3 x 3 /
Magic square 3 x 3 (2)
Magic square 3 x 3 (2) /
Make a square of "go" stones
Make a square of "go" stones /
Merger of three towns
Merger of three towns /
Move half distance of before
Move half distance of before /
Move water among three tanks
Move water among three tanks /
No pair of two persons
No pair of two persons /
Number added to be over 1000 of the sum
A1 Number added to be over 1000 of the sum /
Number of 50th decimal place
Number of 50th decimal place /
Number of bottles filled with water
Number of bottles filled with water /
Number of games of round-robin tournament
Number of games of round-robin tournament /
Number of games of tournament game
Number of games of tournament game /
Number of steps and length of stride
Number of steps and length of stride /
Number of successive victories
Number of successive victories /
Number of work days of three machines
Number of work days of three machines /
Operation of integers
Operation of integers /
Operation with fraction (distribution)
Operation with fraction (distribution) /
Overlapped sector and trapezoid
Overlapped sector and trapezoid /
Overlapped triangle and pentagon
Overlapped triangle and pentagon /
Overlapped two triangles
Overlapped two triangles /
Paint four places by four colors
Paint four places by four colors /
Paint four places by three colors
Paint four places by three colors /
Pair of two persons
Pair of two persons /
Paper tape around the equator of the earth
Paper tape around the equator of the earth /
Partition and area of trapezoid
Partition and area of trapezoid /
Partition of parallelogram
Partition of parallelogram /
Partition of parallelogram, homothetic
Partition of parallelogram, homothetic /
Partition of rectangle
Partition of rectangle /
Partition of trapezoid
Partition of trapezoid /
Partition of triangle
Partition of triangle /
Passing each other of trains
Passing each other of trains /
Pole in the water
Pole in the water /
Price of pork at butcher
Price of pork at butcher /
Problems
Answers and solutions
Product of numbers of two spots of dice
Product of numbers of two spots of dice /
Product of two integers is 44448888
Product of two integers is 44448888 /
Product sold at three stores
Product sold at three stores /
Quadrangle and angle
Quadrangle and angle /
Questionnaire to 41 students
Questionnaire to 41 students /
Quotient of A/B is smaller than X
Quotient of A/B is smaller than X /
Ratio of weight and number of balls
Ratio of weight and number of balls /
Rearrangement of ten coins
Rearrangement of ten coins /
Reduce the speed on the way
Reduce the speed on the way /
Relationship of three integers (distribution)
Relationship of three integers (distribution) /
Repack oranges in the bag
Repack oranges in the bag /
Represent 9 by sum of three integers
Represent 9 by sum of three integers /
Rotation of square
Rotation of square /
Sales change in three months
Sales change in three months /
Sales number in three months
Sales number in three months /
Salt solutions in two beakers
Salt solutions in two beakers /
Same depth of the water in the vessel
Same depth of the water in the vessel /
Same remainder when three integers divided
Same remainder when three integers divided /
Sequence without multiple of 3 or 5
Sequence without multiple of 3 or 5 /
Sequences of numbers of 1, 2, 3
Sequences of numbers of 1, 2, 3 /
Share one cake
Share one cake /
Shift of decimal point
Shift of decimal point /
Ship move back and forth river
Ship moves back and forth river /
Solid made by rotation
Solid made by rotation /
Speed of a car
Speed of a car /
Speed ratio of two persons
Speed ratio of two persons /
Square with black and white stones
Square with black and white stones /
Stakes to the perimeter of the rectangle
Stakes to the perimeter of the rectangle /
Steps of mother and child
Steps of mother and child /
String around the corn
String around the corn /
Sum and product of three integers
Sum and product of three integers /
Sum of 16 consecutive integers
Sum of 16 consecutive integers /
Sum of numbers of two spots of dice
Sum of numbers of two spots of dice /
Sum of odd number and even number
Sum of odd number and even number /
Sum of seven continuous integers
Sum of seven continuous integers /
Sweets sold at a candy store
Sweets sold at a candy store /
Test scores of five persons
Test scores of five persons /
The volume when water freezes
The volume when water freezes /
Three digit integer divide 1570
Three digit integer divide 1570 /
Three digits number out of four cards
Three digits number out of four cards
Three empty bottles for new bottle
Three empty bottles for new bottle /
Three kinds of fruit for children
Three kinds of fruit for children /
Three needles in a disk
Three needles in a disk /
Three persons running around the pond
Three persons running around the pond /
Three persons' 100m race in pairs
Three persons' 100m race in pairs /
Time going up by elevator
Time going up by elevator /
Time of overlapping
Time of overlapping /
Time of raining
Time of raining /
Time of straight line
Time of straight line /
Train moves among three stations
Train moves among three stations /
Trees planted along the road
Trees planted along the road /
Triangle and angle
Triangle and angle /
Triangle and three circles
Triangle and three circles /
Two bicycles in a tunnel
Two bicycles in a tunnel /
Two fractions whose numerator is 1
Two fractions whose numerator is 1 /
Volume ratio of alcohol
Volume ratio of alcohol /
Walk around the pond
Walk around the pond /
Walk on another escalator
Walk on another escalator /
Walk on the escalator
Walk on the escalator /
Water pumped out of tank
Water pumped out of tank /
Weight of log
Weight of log /
Weight of the salt solution
Weight of the salt solution /
What day of the month
What day of the month /
What day of the week
What day of the week /
What day of the week six years later
What day of the week six years later /
White and black stones
White and black stones /
Work done by two persons
Work done by two persons /
Wrong scale of tape measures
Wrong scale of tape measures /
Level 2
"Janken" game among three persons
"Janken" game among three persons /
1/12 = 1/x + 1/y
1/12 = 1/x + 1/y /
100th anniversary day of foundation
100th anniversary day of foundation /
12 points on a circumference
12 points on a circumference /
13 persons ordered one confectionery and drink
13 persons ordered one confectionery and drink /
1989 expressed by continuous integers
1989 expressed by continuous integers /
200---07 divisible by 27 and 81
200---07 divisible by 27 and indivisible by 81 /
200---07 divisible by 27 and indivisible by 81
200---07 divisible by 27 and indivisible by 81 /
27 pieces of gold coin
<Deleted> Four different volume of iron balls
Four different volume of iron balls /
A circle moves around a figure
A circle moves around a figure /
Accumulated cubes and paint
Accumulated cubes and paint /
Add 3 or 8 to a number
Add 3 or 8 to a number /
Admission ticket of a theater
Admission ticket of a theater /
Another cut line on the development view
Another cut line on the development view /
Another partition of right hexagon
Another partition of right hexagon /
Another sharing six oranges
Another sharing six oranges /
Another triathlon race
Another triathlon race /
Area ratio of parallelogram
Area ratio of parallelogram /
Area ratio of square and triangle
Area ratio of square and triangle
Area ratio of square and triangle
Area ratio of square and triangle /
Area ratio of triangles
Area ratio of triangles /
Arrange three numbers and alphabet
Arrange three numbers and alphabet /
Arrangement of numbers and alphabets
Arrangement of numbers and alphabets /
Arrangement of numbers based on rules
Arrangement of numbers based on rules /
Assemble development view
Assemble development view /
Bagging work by three persons
Bagging work by three persons /
Bending paper tape right-angled
Bending paper tape right-angled /
Board on the roller
Board on the roller /
Bring balls to moving dray
Bring balls to moving dray /
Carry an iron plate
Carry an iron plate /
Carry water to cart
Carry water to cart /
Change direction at every meeting
Change direction at every meeting /
Change speed to catch up
Change speed to catch up /
Choose number from 1 to 10 by turns
Choose number from 1 to 10 by turns /
Coin rotating around another coin
Coin rotating around another coin /
Combination of five equilateral triangles
Combination of five equilateral triangles /
Combination of two right triangles
Combination of two right triangles /
Combining small equilateral triangles to be large one
Combining small equilateral triangles to be large one
Combining small equilateral triangles to be large one /
Congruent two sectors
Congruent two sectors /
Connect red tapes and white tapes
Connect red tapes and white tapes /
Connecting three points to be triangle
Connecting three points to be triangle /
Cows in the pasture
Cows in the pasture /
Cut cube to be development view
Cut cube to be development view /
Cut line on the development view
Cut line on the development view /
Cut squares out of rectangular paper
Cut squares out of rectangular paper /
Development view of cube
Development view of cube /
Development view of cube with numbers
Development view of cube with numbers /
Development view of quadrangular pyramid
Development view of quadrangular pyramid /
Development view of rectangular prism
Development view of rectangular prism /
Difference of total surface area
Difference of total surface area /
Discounted ticket price
Discounted ticket price /
Disk rolls around another disk
Disk rolls around another disk /
Distribution of seeds of flower
Distribution of seeds of flower /
Distribution of seeds of flower
Divide hexagon
Divide hexagon /
Divide quarter sector into 36 portion
Divide quarter sector into 36 portion /
Divide rectangle into three figures
Divide rectangle into three figures /
Divide three numbers by the same number
Divide three numbers by the same number /
Division of square
Division of square /
Donation by three persons
Donation by three persons /
Election of the president of student council
Election of the president of student council /
Election of three committees
Election of three committees /
Exchange salt solution between two
Exchange salt solution between two /
Extension of sides of quadrangle
Extension of sides of quadrangle /
Extension of three sides of triangle
Extension of three sides of triangle /
Figure in two circles attached
Figure in two circles attached /
Find a bag of fake gold coins
Find a bag of fake gold coins /
Find a fake gold coin
Find a fake gold coin /
Find one heavy ball by even balance
Find one heavy ball by even balance /
Find the number of honest person
Find the number of honest person /
Find two cakes among three
Find two cakes among three /
Fixed and proportional rate to send package
Fixed and proportional rate to send package /
Fold a circle twice and open
Fold a circle twice and open /
Fold a rectangular paper
Fold a rectangular paper /
Fold and cut a rectangular paper
Fold and cut a rectangular paper /
Fold newspaper 20 times
Fold newspaper 20 times /
Folded and flattened paper tape
Folded and flattened paper tape /
Four animals on a rectangle
Four animals on a rectangle
Four animals on a rectangle /
Four empty bottles for one new bottle
Four empty bottles for one new bottle /
Four figures containing 5
Four figures containing 5 /
Four numbers in square cards
Four numbers in square cards /
Four points on the side of rectangle
Four points on the side of rectangle /
Four sectors in a square
Four sectors in a square /
Four solids in water tank
Four solids in water tank /
Four wins and three losses at World Series
Four wins and three losses at World Series /
Game walking around a pond
Game walking around a pond /
Gather flower petals in a schoolyard
Gather flower petals in a schoolyard /
Gather flower petals in a schoolyard
Go forth by three steps and back by two steps
Go forth by three steps and back by two steps /
Go to another town by bicycle and on foot
Go to another town by bicycle and on foot /
Graph of distance of two persons
Graph of distance of two persons /
Guess the color of the card
Guess the color of the card /
Guess the color of the hut wearing
Guess the color of the hut wearing /
Guess what I'm thinking
Guess what I'm thinking /
Hexagon is divided by two diagonal lines
Hexagon is divided by two diagonal lines /
Homework of summer vacation
Homework of summer vacation /
How many numbers of 0 in the product
How many numbers of 0 in the product /
How old am I now?
How old am I now? /
I was born in ABCD
I was born in ABCD /
Insect moving along the side of solid
Insect moving along the side of solid /
Integer divided by 4, 5, 7 with some remainder
Integer divided by 4, 5, 7 with some remainder /
Integers of remainder one divided by three
Integers of remainder one divided by three /
Length in a triangle
Length in a triangle /
Length of a candle
Length of a candle /
Library between school and station
Library between school and station /
Load dropped to a river from ship
Load dropped to a river from ship /
Long hand and hour hand of flower clock
Long hand and hour hand of flower clock /
Long-distance train
Long-distance train /
Machine displays numbers of two digits
Machine displays numbers of two digits /
Make big equilateral triangle by putting small ones
Make big equilateral triangle by putting small ones /
Make formula using 3 four times
Make formula using 3 four times /
Make right hexagon of parallelograms and trapezoids
Make right hexagon of parallelograms and trapezoids /
Management of the party
Management of the party /
Move of the side of regular tetrahedron
Move of the side of regular tetrahedron /
Movement of rectangle overlapping triangle
Movement of rectangle overlapping triangle /
Moving by running and a car
Moving by running and a car /
Moving point on the side of rectangle
Moving point on the side of rectangle /
Multiple of each number of digit
Multiple of each number of digit /
Multiple of even numbers
Multiple of even numbers /
Multiply 27 50 times
Multiply 27 50 times /
No multiple of 9 and no 9 in any digit
No multiple of 9 and no 9 in any digit /
No number as a price including tax
No number as a price including tax /
Notice an article left behind
Notice an article left behind /
Number and cost price of apple
Number and cost price of apple /
Number of days of Friday 13th
Number of days of Friday 13th /
Number of sheets of origami
Number of sheets of origami /
Number of sheets of origami crane
Number of sheets of origami crane
Number of spots of dice
Number of spots of dice /
Number of steps to catch up
Number of steps to catch up /
Number of teams are multiples of two in tournament
Number of teams are multiples of two in tournament /
Number of times divided by 3
Number of times divided by 3
Number of times divided by 3 /
Number of ways from P to A
Number of ways from P to A /
Number to buy to drink 100 bottles
Number to buy to drink 100 bottles /
Numbers of stone taken out to make pair
Numbers of stone taken out to make pair /
Numbers with no 4
Numbers with no 4 /
One integer added to 12 after another
One integer added to 12 after another /
One number after another is multiplied from 1
One number after another is multiplied from 1 /
One water feeding pipe and two draining pipes
One water feeding pipe and two draining pipes /
Operational rule of integers
Operational rule of integers /
Overlapped right angle triangles
Overlapped right angle triangles /
Overlapped two circles and rectangle
Overlapped two circles and rectangle
Overlapping of rectangle and circle
Overlapping of rectangle and circle /
Paper tape is cut at 3, 5, 7 equal parts
Paper tape is cut at 3, 5, 7 equal parts /
Partition in a water tank
Partition in a water tank /
Partition of a circle
Partition of a circle /
Partition of parallelogram to find area
Partition of parallelogram to find area /
Partition of rectangle and three points
Partition of rectangle and three points /
Partition of right hexagon
Partition of right hexagon /
Partition of square
Partition of square /
Partition of trapezoid
Partition of trapezoid /
Partition of trapezoid to be triangle
Partition of trapezoid to be triangle /
Pass money among three persons
Pass money among three persons /
Pass traffic jam section
Pass traffic jam section /
Passing every five minutes
Passing every five minutes /
Pile up cubes on a square mat board
Pile up cubes on a square mat board /
Piled up two-face coins
Piled up two-face coins /
Play at dice using figure
Play at dice using figure /
Price of consumption tax included
Price of consumption tax included /
Product of two integers is 44448888
Product of two integers is 44448888 /
Projection view of solid
Projection view of solid /
Put in soy sauce by 1L
Put in soy sauce by 1L /
Put in soy sauce by 1L /
Put two rectangular prism into water
Put two rectangular prism into water /
Quotient and remainder are same
Quotient and remainder are same /
Rabbits in the hut
Rabbits in the hut /
Ranking of shogi game among three
Ranking of shogi game among three /
Ratio of area and length of sides
Ratio of area and length of sides
Rearrangement of 12 cards
Rearrangement of 12 cards /
Remain 5L in 7L vessel
Remain 5L in 7L vessel /
Repeat operation of integers
Repeat operation of integers /
Replacement of long and hour hand
Replacement of long and hour hand /
Replacement of long and hour hand (3 steps)
Replacement of long and hour hand, 3 steps
Rope going around the earth
Rope going around the earth /
Rotate triangle around a rectangle
Rotate triangle around a rectangle /
Rotation of a triangle
Rotation of a triangle /
Round trip of the mountain path
Round trip of the mountain path /
Round-robin tournament in five teams
Round-robin tournament in five teams /
Rounded book
Rounded book /
Run around the pond
Run around the pond /
Same departure time of two trains
Same departure time of two trains /
Seats of six persons
Seats of six persons /
Sequence of integers after separation of each digit
Sequence of integers after separation of each digit /
Sequences on a certain condition
Sequences on a certain condition /
Sequences on a certain rule
Sequences on a certain rule /
Set of apple and orange juice
Set of apple and orange juice /
Shadow of quadratic prism
Shadow of quadratic prism /
Share oranges with several persons
Share oranges with several persons /
Share six oranges with four persons
Share six oranges with four persons /
Shortest line on solid
Shortest line on solid /
Six digits integer
Six digits integer /
Six light bulbs
Six light bulbs
Six light bulbs /
Six squares overlap sectors
Six squares overlap sectors /
Skip every 2 piece on the stones around a pond
Skip every 2 piece on the stones around a pond /
Solid made by cutting quadrangular pyramid
Solid made by cutting quadrangular pyramid /
Solid of revolution of trapezoid
Solid of revolution of trapezoid /
Solid with eight equilateral triangles
Solid with eight equilateral triangles /
Special digital clock
Special digital clock /
Speed ratio is 7 : 5
Speed ratio is 7 : 5 /
Speed ratio of two persons
Speed ratio of two persons /
Square in the right triangle
Square in the right triangle /
Steam whistle from steam train
Steam whistle from steam train /
Straight lines with certain angles
Straight lines with certain angles /
Suitable lid for vessel
Suitable lid for vessel /
Sum of each digit is 10
Sum of each digit is 10 /
Sum of fractions whose numerator is 1
Sum of fractions whose numerator is 1 /
Sum of number of spots of dice
Sum of number of spots of dice /
Sum of three integers is 1000
Sum of three integers is 1000 /
Sum of two integers is divided by G.C.D.
Sum of two integers is divided by G.C.D. /
Take out 50kg gold dust
Take out 50kg gold dust /
Take out three kind of ball
Take out three kind of ball /
Talk a rumor to ten persons
Talk a rumor to ten persons /
Telephone rate of two companies
Telephone rate of two companies /
Ten cars passing on the highway
Ten cars passing on the highway /
Test of four questions
Test of four questions
Test of ten problems of O or X
Test of ten problems of O or X /
Test of three problems
Test of three problems /
Three angles in two figures
Three angles in two figures /
Three cylinders in water tank
Three cylinders in water tank /
Three digit integers divided by 35 and 40
Three digit integers divided by 35 and 40
Three digit integers divided by 35 and 40 /
Three persons from home to a park
Three persons from home to a park /
Three persons in the train
Three persons in the train /
Three persons read books with different pages
Three persons read books with different pages /
Three persons run in the school ground
Three persons run in the school ground /
Three persons start at different time
Three persons start at different time /
Three persons take out red and white ball
Three persons take out red and white ball /
Three pieces among red, blue, and black
Three pieces among red, blue, and black /
Three points moving on three circles
Three points moving on three circles /
Time of passing each other
Time one passed another
Time one passed another /
Time when passing each other
Time when passing each other /
Tournament games of soccer in 7 teams
Tournament games of soccer in 7 teams /
Tournament of soccer in eight teams
Tournament of soccer in eight teams /
Town on the top of mountain
Town on the top of mountain /
Transformation of formula
Transformation of formula /
Trapezoid and three sectors
Trapezoid and three sectors /
Travel distance and railway fare
Travel distance and railway fare /
Triangle and trapezoid
Triangle and trapezoid /
Triangle in hexagon
Triangle in hexagon /
Triangle in rectangle
Triangle in rectangle /
Triangular pyramid from rectangular paper
Triangular pyramid from rectangular paper /
Triathlon race
Triathlon race /
Two circles with a shaded area
Two circles with a shaded area /
Two different styles of moving
Two different styles of moving /
Two persons go to house each other
Two persons go to house each other /
Two persons meet and janken
Two persons meet and janken /
Two persons move on a rectangle
Two persons move on a rectangle /
Two persons moving around a pond
Two persons moving around a pond /
Two persons roll a die
Two persons roll a die /
Two persons' moving by bicycle
Two persons' moving by bicycle /
Two points between school and park
Two points between school and park /
Two points moving on a diameter
Two points moving on a diameter /
Two squares and one circle
Two squares and one circle /
Two way speed walking on the escalator
Two way speed walking on the escalator /
Visitors' line at aquarium
Visitors' line at aquarium /
Walk along riverside and ship in the river
Walk along riverside and ship in the river /
Walk on 40 steps escalator
Walk on 40 steps escalator /
Walk to the next bus stop
Walk to the next bus stop /
Walking and running around a pond
Walking and running around a pond /
Water and wine in two vessels
Water and wine in two vessels /
Water into three tanks
Water into three tanks /
Water moves in three tanks
Water moves in three tanks /
Which house is whose
Which house is whose /
Whistle from express train
Whistle from express train /
Year of Showa era and A.D.
Year of Showa era and A.D. /
Level 3
365 cards with date of one year
365 cards with date of one year /
Area ratio divided in parallelogram
Area ratio divided in parallelogram /
Area ratio divided in parallelogram
Area ratio divided in sector
Area ratio divided in sector /
Area ratio divided in triangle
Area ratio divided in triangle /
Arrangement of squares in order
Arrangement of squares in order /
Candies for children gathering
Candies for children gathering /
Change of gas rate in several months
Change of gas rate in several months /
Circle moving around a figure
Circle moving around a figure /
Circle moving around hexagon
Circle moving around hexagon /
Compare area of black and white square
Compare area of black and white square /
Connected parallelograms
Connected parallelograms /
Cut another quadrangular pyramid
Cut another quadrangular pyramid /
Cut piling up eight cubes
Cut piling up eight cubes /
Cut rectangular prism with planes parallel to faces
Cut rectangular prism with planes parallel to faces /
Cut right quadrangular pyramid
Cut right quadrangular pyramid /
Cut surface of cube
Cut surface of cube /
Cutting line based on development view
Cutting line based on development view /
Development view of solid with six faces of lozenge
Development view of solid with six faces of lozenge /
Election of class representative
Election of class representative /
Find the road to paradise
Find the road to paradise /
Find the way to go
Find the way to go /
Going back and forth two points
Going back and forth two points /
Hollowing out rectangular prism
Hollowing out rectangular prism /
Hour hand, minute hand and second hand
Hour hand, minute hand and second hand /
Lottery of "Amidakuji"
Lottery of "Amidakuji" /
Multiple of continued integers
Multiple of continued integers /
Multiple of every number of each digit
Multiple of every number of each digit /
Number of cut to make development view
Number of cut to make development view /
Number of dice to be cut or not
Number of dice to be cut or not /
Number of inverse order
Number of inverse order /
Number of songs at concerts
Number of songs at concerts /
Overlapping hexagon and heptagon
Overlapping hexagon and heptagon /
Paint inside of rectangular prism
Paint inside of rectangular prism /
Partition of right triangle
Partition of right triangle /
Piling up cubes and cut
Piling up cubes and cut /
Piling up cubes and put red seals
Piling up cubes and put red seals /
Put 1~8 in a frame
Put 1~8 in a frame /
Put 48 balls into five boxes
Put 48 balls into five boxes /
Put water in four vessels
Put water in four vessels /
Questionnaire on three subjects
Questionnaire on three subjects /
Quotient is rounded off at 1st decimal place
Quotient is rounded off at 1st decimal place /
Rectangle moves and overlaps triangle
Rectangle moves and overlaps triangle /
Rectangular prism and triangular pyramid
Rectangular prism and triangular pyramid /
Reflection in rectangle
Reflection in rectangle /
Removing cards based on the rule
Removing cards based on the rule /
Replacement of long hand and hour hand
Replacement of long hand and hour hand /
Right dodecagon
Right dodecagon /
Same birthday in the class of 50 people
Same birthday in the class of 50 people /
Shadow of block by streetlight
Shadow of block by streetlight /
Shadow of box by stand light
Shadow of box by stand light /
Shadow of rectangular wall
Shadow of rectangular wall /
Solid made by cutting cylinder
Solid made by cutting cylinder /
Square moves in a triangle
Square moves in a triangle /
Square pyramid and homothetic ratio
Square pyramid and homothetic ratio /
Straight line dividing figure into three
Straight line dividing figure into three /
Sum total of every number of each digit
Sum total of every number of each digit /
Table of integers written clockwise
Table of integers written clockwise /
Take out balls from the bag
Take out balls from the bag /
Tape winded around rectangular board
Tape winded around rectangular board /
Taxi fare of two types of cars
Taxi fare of two types of cars /
Ten students roll three dice
Ten students roll three dice /
The 3rd hand on a circular clock
The 3rd hand on a circular clock /
Three blue cards and five red cards
Three blue cards and five red cards /
Three persons moving on a circular pond
Three persons moving on a circular pond /
Three points moving on a circumference
Three points moving on a circumference /
Three points moving on a rectangle
Three points moving on a rectangle /
Time of display of crossing for trains
Time of display of crossing for trains /
Triangle covered by squares
Triangle covered by squares /
Triangle of integers written counterclockwise
Triangle of integers written counterclockwise /
Two circles moving in triangle
Two circles moving in triangle /
Two machines displaying numbers on the rule
Two machines displaying numbers on the rule /
Two persons moving on an annular road
Two persons moving on an annular road /
Two persons walking on a moving walkway
Two persons walking on a moving walkway /
Two points moving in a square
Two points moving in a square /
Vessel, water and bar
Vessel, water and bar /
Volleyball tournament of five teams
Volleyball tournament of five teams /
Volume ratio after cutting rectangular prism
Volume ratio after cutting rectangular prism /
Way of putting spots on the die
Way of putting spots on the die /
Level 4
Image solid from development view
Image solid from development view /
Round the 3rd digit from the top of number
Round the 3rd digit from the top of number /
New Drill
Photo
Google +
Mt. Fuji
Photo/Movies
Updates
DD23 updated
DD29 updated
DDD8 updated
Exam.L1 updated
Exam.L1 Updated
Exam.L1 updated
Exam.L1 Updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 Updated
Exam.L2 undated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3. updated
II17 is deleted
KK.14 is deleted
New problems
Problems of Level 1~3 are posted
More
Home
Contact Us
Exam.L1
ATOMIGAKUEN-2014
ATOMIGAKUEN-2014 /
JISSENJOSHIGAKUEN-2014
JISSENJOSHIGAKUEN-2014 /
JOHOKUSAITAMA-2014
JOHOKUSAITAMA-2014 /
JOSAIKAWAGOE-2014
JOSAIKAWAGOE-2014 /
KAMAKURAJOGAKUIN-2014
KAMAKURAJOGAKUIN-2014 /
NAKANO ATTACHED TO MEIJI UNIV.-2014
NAKANO ATTACHED TO MEIJI UNIV.-2014/
OTSUMA-2014
OTSUMA-2014 /
OTSUMA-2014
OTSUMA-2014/
RIKKYONIIZA-2008
RIKKYONIIZA-2008 /
SEIJO-2014
SEIJO-2014 /
SETAGAYAGAKUEN-2004
SETAGAYAGAKUEN-2004 /
TOHO-2014
TOHO-2014/
TOKYOCITYUNIV-2007
TOKYOCITYUNIV-2007 /
TOYOEIWA-2008
TOYOEIWA-2008 /
Exam.L2
AOYAMAGAKUIN-2010
AOYAMAGAKUIN-2010 /
ASANO-2010
ASANO-2010 /
JOHOKU-2008
JOHOKU-2008 /
KEIOCHUTOBU-2009
KEIOCHUTOBU-2009 /
KEIOFUTSUBU-2009
KEIOFUTSUBU-2009 /
KEIOSHONANFUJISAWA-2008
KEIOSHONANFUJISAWA-2008 /
LA SALLE-2008
LA SALLE-2008 /
LA SALLE-2009
LA SALLE-2009 /
MUSASHI-2009
MUSASHI-2009 /
SHIRAYURI-2014
SHIRAYURI-2014 /
Exam.L3
Azabu-1999
Azabu-1999 /
AZABU-2004
AZABU-2004 /
AZABU-2007
AZABU-2007 /
AZABU-2008
AZABU-2008 /
AZABU-2009
AZABU-2009 /
AZABU-2010
AZABU-2010 /
EIKO-2007
EIKO-2007 /
JOSHIGAKUIN-2008
JOSHIGAKUIN-2008 /
KAISEI-2007
KAISEI-2007 /
KAISEI-2009
KAISEI-2009 /
KOMABATOHO-2009
KOMABATOHO-2009 /
NADA-2003-Day1
NADA-2003-Day1 /
NADA-2003-Day2
NADA-2003-Day2 /
NADA-2004-Day1
NADA-2004-Day1 /
NADA-2005-Day1
NADA-2005-Day1 /
NADA-2006-Day1
NADA-2006-Day1 /
NADA-2007-Day1
NADA-2007-Day1 /
NADA-2009-Day1
NADA-2009-Day1 /
NDA-2003-Day2
OIN-2009
OIN-2009 /
SEIKOGAKUIN-2007
SEIKOGAKUIN-2007 /
TSUKUBAUNIV KOMABA-2001
TSUKUBAUNIV KOMABA-2001 /
Level 1
1 + 4 + 7 + 10 + ----- + 58 = ?
1 + 4 + 7 + 10 + ----- + 58 = ? /
100 m dash
100 m dash
100 m dash /
100 steps of escalator
100 steps of escalator /
111111111 x 111111111 = ?
111111111 x 111111111 = ? /
2/3 of 5 hours and 15 minutes
2/3 of 5 hours and 15 minutes /
2006 times multiple of two
2006 times multiple of two /
20th number of sequences
20th number of sequences /
50 times multiple of three
50 times multiple of three /
55 pieces of one and five yen coins
55 pieces of one and five yen coins /
70th number of sequences
70th number of sequences /
Add 5 or 2 to a integer to be multiple
Add 5 or 2 to a integer to be multiple /
Angle at 7:18
Angle at 7:18 /
Angle in a quadrangle
Angle in a quadrangle /
Another 100m dash
Another 100m dash /
Another three digits number of cards
Another three digits number of cards /
Area of shadow area in a circle
Area of shadow area in a circle /
Area of trapezoid
Area of trapezoid /
Area ratio of parallelogram and two triangles
Area ratio of parallelogram and two triangles /
Arrangement of ● and ○
Arrangement of ● and ○ /
Assemble development view
Assemble development view /
Assemble development view and water in
Assemble development view and water in /
Average speed
Average speed /
Bring all poles to one point
Bring all poles to one point /
Buy apple and orange
Buy apple and orange /
Calculation of measure of time
Calculation of measure of time /
Change of pondage of a dam
Change of pondage of a dam /
Change one yen coins to five and ten coins
Change one yen coins to five and ten coins /
Chess tournament of four people
Chess tournament of four people /
Circle and angle
Circle and angle /
Circle and square in a square
Circle and square in a square /
Circle and triangle
Circle and triangle /
Compare height of three mountains
Compare height of three mountains /
Concentration of salt solution after operation
Concentration of salt solution after operation /
Consumption tax inclusive price
Consumption tax inclusive price /
Crack chocolate bar
Crack chocolate bar /
Cutting a cylinder
Cutting a cylinder /
Decimals to be represented by fraction
Decimals to be represented by fraction /
Development view is square
Development view is square /
Difference of three clocks
Difference of three clocks /
Discounted price with no loss
Discounted price with no loss /
Distribution of three fruits
Distribution of three fruits /
Divide L character type figure
Divide L character type figure /
Divided by 4 and 5
Divided by 4 and 5 /
Divisible number of the product of integers
Divisible number of the product of integers /
Division of quadrangle
Division of quadrangle /
Division of triangle into six
Division of triangle into six /
Division to the 3rd decimal
Division to the 3rd decimal /
Drain away the water in the tank
Drain away the water in the tank /
Exchange rate of pound and won
Exchange rate of pound and won /
Exchange rate of Yen and US dollar
Exchange rate of Yen and US dollar /
Famous problem of bacteria
Famous problem of bacteria /
Fast clock and slow clock
Fast clock and slow clock /
Fish burning machine
Fish burning machine /
Five persons in the train
Five persons in the train /
Five persons standing in a line
Five persons standing in a line /
Five rectangles of same area
Five rectangles of same area /
Folding back of square
Folding back of square /
Four articles in four boxes with price tag
Four articles in four boxes with price tag /
Four children between parents
Four children between parents /
Four integers of two digit
Four integers of two digit /
Fraction between two fractions
Fraction between two fractions /
Fraction can not be reduced
Fraction can not be reduced /
Fraction denoted by the decimal
Fraction denoted by the decimal /
G.C.D. is 8
G.C.D. is 8 /
Give and take between two persons
Give and take between two persons /
Got over a pass
Got over a pass /
Hand out apples, oranges, and bananas
Hand out apples, oranges, and bananas /
Hand out presents to two of four persons
Hand out presents to two of four persons /
Hand out presents to two persons
Hand out presents to two persons /
Hexagonal column
Hexagonal column /
Home work plan in summer vacation
Home work plan in summer vacation /
How many liars in four ?
How many liars in four ? /
How many rectangles
How many rectangles /
Integer divided by 4 and 5
Integer divided by 4 and 5 /
Intersections with straight lines
Intersections with straight lines /
Janken and take marbles
Janken and take marbles /
Jiro pursue Taro
Jiro pursue Taro /
Length in quadrangle
Length in quadrangle /
Length in rectangle
Length in rectangle /
Length of extended toilet paper
Length of extended toilet paper /
Level1Drill
Day1
Level1Day1-Answer&Solution
List price discounted
List price discounted /
Magic square 3 x 3
Magic square 3 x 3 /
Magic square 3 x 3 (2)
Magic square 3 x 3 (2) /
Make a square of "go" stones
Make a square of "go" stones /
Merger of three towns
Merger of three towns /
Move half distance of before
Move half distance of before /
Move water among three tanks
Move water among three tanks /
No pair of two persons
No pair of two persons /
Number added to be over 1000 of the sum
A1 Number added to be over 1000 of the sum /
Number of 50th decimal place
Number of 50th decimal place /
Number of bottles filled with water
Number of bottles filled with water /
Number of games of round-robin tournament
Number of games of round-robin tournament /
Number of games of tournament game
Number of games of tournament game /
Number of steps and length of stride
Number of steps and length of stride /
Number of successive victories
Number of successive victories /
Number of work days of three machines
Number of work days of three machines /
Operation of integers
Operation of integers /
Operation with fraction (distribution)
Operation with fraction (distribution) /
Overlapped sector and trapezoid
Overlapped sector and trapezoid /
Overlapped triangle and pentagon
Overlapped triangle and pentagon /
Overlapped two triangles
Overlapped two triangles /
Paint four places by four colors
Paint four places by four colors /
Paint four places by three colors
Paint four places by three colors /
Pair of two persons
Pair of two persons /
Paper tape around the equator of the earth
Paper tape around the equator of the earth /
Partition and area of trapezoid
Partition and area of trapezoid /
Partition of parallelogram
Partition of parallelogram /
Partition of parallelogram, homothetic
Partition of parallelogram, homothetic /
Partition of rectangle
Partition of rectangle /
Partition of trapezoid
Partition of trapezoid /
Partition of triangle
Partition of triangle /
Passing each other of trains
Passing each other of trains /
Pole in the water
Pole in the water /
Price of pork at butcher
Price of pork at butcher /
Problems
Answers and solutions
Product of numbers of two spots of dice
Product of numbers of two spots of dice /
Product of two integers is 44448888
Product of two integers is 44448888 /
Product sold at three stores
Product sold at three stores /
Quadrangle and angle
Quadrangle and angle /
Questionnaire to 41 students
Questionnaire to 41 students /
Quotient of A/B is smaller than X
Quotient of A/B is smaller than X /
Ratio of weight and number of balls
Ratio of weight and number of balls /
Rearrangement of ten coins
Rearrangement of ten coins /
Reduce the speed on the way
Reduce the speed on the way /
Relationship of three integers (distribution)
Relationship of three integers (distribution) /
Repack oranges in the bag
Repack oranges in the bag /
Represent 9 by sum of three integers
Represent 9 by sum of three integers /
Rotation of square
Rotation of square /
Sales change in three months
Sales change in three months /
Sales number in three months
Sales number in three months /
Salt solutions in two beakers
Salt solutions in two beakers /
Same depth of the water in the vessel
Same depth of the water in the vessel /
Same remainder when three integers divided
Same remainder when three integers divided /
Sequence without multiple of 3 or 5
Sequence without multiple of 3 or 5 /
Sequences of numbers of 1, 2, 3
Sequences of numbers of 1, 2, 3 /
Share one cake
Share one cake /
Shift of decimal point
Shift of decimal point /
Ship move back and forth river
Ship moves back and forth river /
Solid made by rotation
Solid made by rotation /
Speed of a car
Speed of a car /
Speed ratio of two persons
Speed ratio of two persons /
Square with black and white stones
Square with black and white stones /
Stakes to the perimeter of the rectangle
Stakes to the perimeter of the rectangle /
Steps of mother and child
Steps of mother and child /
String around the corn
String around the corn /
Sum and product of three integers
Sum and product of three integers /
Sum of 16 consecutive integers
Sum of 16 consecutive integers /
Sum of numbers of two spots of dice
Sum of numbers of two spots of dice /
Sum of odd number and even number
Sum of odd number and even number /
Sum of seven continuous integers
Sum of seven continuous integers /
Sweets sold at a candy store
Sweets sold at a candy store /
Test scores of five persons
Test scores of five persons /
The volume when water freezes
The volume when water freezes /
Three digit integer divide 1570
Three digit integer divide 1570 /
Three digits number out of four cards
Three digits number out of four cards
Three empty bottles for new bottle
Three empty bottles for new bottle /
Three kinds of fruit for children
Three kinds of fruit for children /
Three needles in a disk
Three needles in a disk /
Three persons running around the pond
Three persons running around the pond /
Three persons' 100m race in pairs
Three persons' 100m race in pairs /
Time going up by elevator
Time going up by elevator /
Time of overlapping
Time of overlapping /
Time of raining
Time of raining /
Time of straight line
Time of straight line /
Train moves among three stations
Train moves among three stations /
Trees planted along the road
Trees planted along the road /
Triangle and angle
Triangle and angle /
Triangle and three circles
Triangle and three circles /
Two bicycles in a tunnel
Two bicycles in a tunnel /
Two fractions whose numerator is 1
Two fractions whose numerator is 1 /
Volume ratio of alcohol
Volume ratio of alcohol /
Walk around the pond
Walk around the pond /
Walk on another escalator
Walk on another escalator /
Walk on the escalator
Walk on the escalator /
Water pumped out of tank
Water pumped out of tank /
Weight of log
Weight of log /
Weight of the salt solution
Weight of the salt solution /
What day of the month
What day of the month /
What day of the week
What day of the week /
What day of the week six years later
What day of the week six years later /
White and black stones
White and black stones /
Work done by two persons
Work done by two persons /
Wrong scale of tape measures
Wrong scale of tape measures /
Level 2
"Janken" game among three persons
"Janken" game among three persons /
1/12 = 1/x + 1/y
1/12 = 1/x + 1/y /
100th anniversary day of foundation
100th anniversary day of foundation /
12 points on a circumference
12 points on a circumference /
13 persons ordered one confectionery and drink
13 persons ordered one confectionery and drink /
1989 expressed by continuous integers
1989 expressed by continuous integers /
200---07 divisible by 27 and 81
200---07 divisible by 27 and indivisible by 81 /
200---07 divisible by 27 and indivisible by 81
200---07 divisible by 27 and indivisible by 81 /
27 pieces of gold coin
<Deleted> Four different volume of iron balls
Four different volume of iron balls /
A circle moves around a figure
A circle moves around a figure /
Accumulated cubes and paint
Accumulated cubes and paint /
Add 3 or 8 to a number
Add 3 or 8 to a number /
Admission ticket of a theater
Admission ticket of a theater /
Another cut line on the development view
Another cut line on the development view /
Another partition of right hexagon
Another partition of right hexagon /
Another sharing six oranges
Another sharing six oranges /
Another triathlon race
Another triathlon race /
Area ratio of parallelogram
Area ratio of parallelogram /
Area ratio of square and triangle
Area ratio of square and triangle
Area ratio of square and triangle
Area ratio of square and triangle /
Area ratio of triangles
Area ratio of triangles /
Arrange three numbers and alphabet
Arrange three numbers and alphabet /
Arrangement of numbers and alphabets
Arrangement of numbers and alphabets /
Arrangement of numbers based on rules
Arrangement of numbers based on rules /
Assemble development view
Assemble development view /
Bagging work by three persons
Bagging work by three persons /
Bending paper tape right-angled
Bending paper tape right-angled /
Board on the roller
Board on the roller /
Bring balls to moving dray
Bring balls to moving dray /
Carry an iron plate
Carry an iron plate /
Carry water to cart
Carry water to cart /
Change direction at every meeting
Change direction at every meeting /
Change speed to catch up
Change speed to catch up /
Choose number from 1 to 10 by turns
Choose number from 1 to 10 by turns /
Coin rotating around another coin
Coin rotating around another coin /
Combination of five equilateral triangles
Combination of five equilateral triangles /
Combination of two right triangles
Combination of two right triangles /
Combining small equilateral triangles to be large one
Combining small equilateral triangles to be large one
Combining small equilateral triangles to be large one /
Congruent two sectors
Congruent two sectors /
Connect red tapes and white tapes
Connect red tapes and white tapes /
Connecting three points to be triangle
Connecting three points to be triangle /
Cows in the pasture
Cows in the pasture /
Cut cube to be development view
Cut cube to be development view /
Cut line on the development view
Cut line on the development view /
Cut squares out of rectangular paper
Cut squares out of rectangular paper /
Development view of cube
Development view of cube /
Development view of cube with numbers
Development view of cube with numbers /
Development view of quadrangular pyramid
Development view of quadrangular pyramid /
Development view of rectangular prism
Development view of rectangular prism /
Difference of total surface area
Difference of total surface area /
Discounted ticket price
Discounted ticket price /
Disk rolls around another disk
Disk rolls around another disk /
Distribution of seeds of flower
Distribution of seeds of flower /
Distribution of seeds of flower
Divide hexagon
Divide hexagon /
Divide quarter sector into 36 portion
Divide quarter sector into 36 portion /
Divide rectangle into three figures
Divide rectangle into three figures /
Divide three numbers by the same number
Divide three numbers by the same number /
Division of square
Division of square /
Donation by three persons
Donation by three persons /
Election of the president of student council
Election of the president of student council /
Election of three committees
Election of three committees /
Exchange salt solution between two
Exchange salt solution between two /
Extension of sides of quadrangle
Extension of sides of quadrangle /
Extension of three sides of triangle
Extension of three sides of triangle /
Figure in two circles attached
Figure in two circles attached /
Find a bag of fake gold coins
Find a bag of fake gold coins /
Find a fake gold coin
Find a fake gold coin /
Find one heavy ball by even balance
Find one heavy ball by even balance /
Find the number of honest person
Find the number of honest person /
Find two cakes among three
Find two cakes among three /
Fixed and proportional rate to send package
Fixed and proportional rate to send package /
Fold a circle twice and open
Fold a circle twice and open /
Fold a rectangular paper
Fold a rectangular paper /
Fold and cut a rectangular paper
Fold and cut a rectangular paper /
Fold newspaper 20 times
Fold newspaper 20 times /
Folded and flattened paper tape
Folded and flattened paper tape /
Four animals on a rectangle
Four animals on a rectangle
Four animals on a rectangle /
Four empty bottles for one new bottle
Four empty bottles for one new bottle /
Four figures containing 5
Four figures containing 5 /
Four numbers in square cards
Four numbers in square cards /
Four points on the side of rectangle
Four points on the side of rectangle /
Four sectors in a square
Four sectors in a square /
Four solids in water tank
Four solids in water tank /
Four wins and three losses at World Series
Four wins and three losses at World Series /
Game walking around a pond
Game walking around a pond /
Gather flower petals in a schoolyard
Gather flower petals in a schoolyard /
Gather flower petals in a schoolyard
Go forth by three steps and back by two steps
Go forth by three steps and back by two steps /
Go to another town by bicycle and on foot
Go to another town by bicycle and on foot /
Graph of distance of two persons
Graph of distance of two persons /
Guess the color of the card
Guess the color of the card /
Guess the color of the hut wearing
Guess the color of the hut wearing /
Guess what I'm thinking
Guess what I'm thinking /
Hexagon is divided by two diagonal lines
Hexagon is divided by two diagonal lines /
Homework of summer vacation
Homework of summer vacation /
How many numbers of 0 in the product
How many numbers of 0 in the product /
How old am I now?
How old am I now? /
I was born in ABCD
I was born in ABCD /
Insect moving along the side of solid
Insect moving along the side of solid /
Integer divided by 4, 5, 7 with some remainder
Integer divided by 4, 5, 7 with some remainder /
Integers of remainder one divided by three
Integers of remainder one divided by three /
Length in a triangle
Length in a triangle /
Length of a candle
Length of a candle /
Library between school and station
Library between school and station /
Load dropped to a river from ship
Load dropped to a river from ship /
Long hand and hour hand of flower clock
Long hand and hour hand of flower clock /
Long-distance train
Long-distance train /
Machine displays numbers of two digits
Machine displays numbers of two digits /
Make big equilateral triangle by putting small ones
Make big equilateral triangle by putting small ones /
Make formula using 3 four times
Make formula using 3 four times /
Make right hexagon of parallelograms and trapezoids
Make right hexagon of parallelograms and trapezoids /
Management of the party
Management of the party /
Move of the side of regular tetrahedron
Move of the side of regular tetrahedron /
Movement of rectangle overlapping triangle
Movement of rectangle overlapping triangle /
Moving by running and a car
Moving by running and a car /
Moving point on the side of rectangle
Moving point on the side of rectangle /
Multiple of each number of digit
Multiple of each number of digit /
Multiple of even numbers
Multiple of even numbers /
Multiply 27 50 times
Multiply 27 50 times /
No multiple of 9 and no 9 in any digit
No multiple of 9 and no 9 in any digit /
No number as a price including tax
No number as a price including tax /
Notice an article left behind
Notice an article left behind /
Number and cost price of apple
Number and cost price of apple /
Number of days of Friday 13th
Number of days of Friday 13th /
Number of sheets of origami
Number of sheets of origami /
Number of sheets of origami crane
Number of sheets of origami crane
Number of spots of dice
Number of spots of dice /
Number of steps to catch up
Number of steps to catch up /
Number of teams are multiples of two in tournament
Number of teams are multiples of two in tournament /
Number of times divided by 3
Number of times divided by 3
Number of times divided by 3 /
Number of ways from P to A
Number of ways from P to A /
Number to buy to drink 100 bottles
Number to buy to drink 100 bottles /
Numbers of stone taken out to make pair
Numbers of stone taken out to make pair /
Numbers with no 4
Numbers with no 4 /
One integer added to 12 after another
One integer added to 12 after another /
One number after another is multiplied from 1
One number after another is multiplied from 1 /
One water feeding pipe and two draining pipes
One water feeding pipe and two draining pipes /
Operational rule of integers
Operational rule of integers /
Overlapped right angle triangles
Overlapped right angle triangles /
Overlapped two circles and rectangle
Overlapped two circles and rectangle
Overlapping of rectangle and circle
Overlapping of rectangle and circle /
Paper tape is cut at 3, 5, 7 equal parts
Paper tape is cut at 3, 5, 7 equal parts /
Partition in a water tank
Partition in a water tank /
Partition of a circle
Partition of a circle /
Partition of parallelogram to find area
Partition of parallelogram to find area /
Partition of rectangle and three points
Partition of rectangle and three points /
Partition of right hexagon
Partition of right hexagon /
Partition of square
Partition of square /
Partition of trapezoid
Partition of trapezoid /
Partition of trapezoid to be triangle
Partition of trapezoid to be triangle /
Pass money among three persons
Pass money among three persons /
Pass traffic jam section
Pass traffic jam section /
Passing every five minutes
Passing every five minutes /
Pile up cubes on a square mat board
Pile up cubes on a square mat board /
Piled up two-face coins
Piled up two-face coins /
Play at dice using figure
Play at dice using figure /
Price of consumption tax included
Price of consumption tax included /
Product of two integers is 44448888
Product of two integers is 44448888 /
Projection view of solid
Projection view of solid /
Put in soy sauce by 1L
Put in soy sauce by 1L /
Put in soy sauce by 1L /
Put two rectangular prism into water
Put two rectangular prism into water /
Quotient and remainder are same
Quotient and remainder are same /
Rabbits in the hut
Rabbits in the hut /
Ranking of shogi game among three
Ranking of shogi game among three /
Ratio of area and length of sides
Ratio of area and length of sides
Rearrangement of 12 cards
Rearrangement of 12 cards /
Remain 5L in 7L vessel
Remain 5L in 7L vessel /
Repeat operation of integers
Repeat operation of integers /
Replacement of long and hour hand
Replacement of long and hour hand /
Replacement of long and hour hand (3 steps)
Replacement of long and hour hand, 3 steps
Rope going around the earth
Rope going around the earth /
Rotate triangle around a rectangle
Rotate triangle around a rectangle /
Rotation of a triangle
Rotation of a triangle /
Round trip of the mountain path
Round trip of the mountain path /
Round-robin tournament in five teams
Round-robin tournament in five teams /
Rounded book
Rounded book /
Run around the pond
Run around the pond /
Same departure time of two trains
Same departure time of two trains /
Seats of six persons
Seats of six persons /
Sequence of integers after separation of each digit
Sequence of integers after separation of each digit /
Sequences on a certain condition
Sequences on a certain condition /
Sequences on a certain rule
Sequences on a certain rule /
Set of apple and orange juice
Set of apple and orange juice /
Shadow of quadratic prism
Shadow of quadratic prism /
Share oranges with several persons
Share oranges with several persons /
Share six oranges with four persons
Share six oranges with four persons /
Shortest line on solid
Shortest line on solid /
Six digits integer
Six digits integer /
Six light bulbs
Six light bulbs
Six light bulbs /
Six squares overlap sectors
Six squares overlap sectors /
Skip every 2 piece on the stones around a pond
Skip every 2 piece on the stones around a pond /
Solid made by cutting quadrangular pyramid
Solid made by cutting quadrangular pyramid /
Solid of revolution of trapezoid
Solid of revolution of trapezoid /
Solid with eight equilateral triangles
Solid with eight equilateral triangles /
Special digital clock
Special digital clock /
Speed ratio is 7 : 5
Speed ratio is 7 : 5 /
Speed ratio of two persons
Speed ratio of two persons /
Square in the right triangle
Square in the right triangle /
Steam whistle from steam train
Steam whistle from steam train /
Straight lines with certain angles
Straight lines with certain angles /
Suitable lid for vessel
Suitable lid for vessel /
Sum of each digit is 10
Sum of each digit is 10 /
Sum of fractions whose numerator is 1
Sum of fractions whose numerator is 1 /
Sum of number of spots of dice
Sum of number of spots of dice /
Sum of three integers is 1000
Sum of three integers is 1000 /
Sum of two integers is divided by G.C.D.
Sum of two integers is divided by G.C.D. /
Take out 50kg gold dust
Take out 50kg gold dust /
Take out three kind of ball
Take out three kind of ball /
Talk a rumor to ten persons
Talk a rumor to ten persons /
Telephone rate of two companies
Telephone rate of two companies /
Ten cars passing on the highway
Ten cars passing on the highway /
Test of four questions
Test of four questions
Test of ten problems of O or X
Test of ten problems of O or X /
Test of three problems
Test of three problems /
Three angles in two figures
Three angles in two figures /
Three cylinders in water tank
Three cylinders in water tank /
Three digit integers divided by 35 and 40
Three digit integers divided by 35 and 40
Three digit integers divided by 35 and 40 /
Three persons from home to a park
Three persons from home to a park /
Three persons in the train
Three persons in the train /
Three persons read books with different pages
Three persons read books with different pages /
Three persons run in the school ground
Three persons run in the school ground /
Three persons start at different time
Three persons start at different time /
Three persons take out red and white ball
Three persons take out red and white ball /
Three pieces among red, blue, and black
Three pieces among red, blue, and black /
Three points moving on three circles
Three points moving on three circles /
Time of passing each other
Time one passed another
Time one passed another /
Time when passing each other
Time when passing each other /
Tournament games of soccer in 7 teams
Tournament games of soccer in 7 teams /
Tournament of soccer in eight teams
Tournament of soccer in eight teams /
Town on the top of mountain
Town on the top of mountain /
Transformation of formula
Transformation of formula /
Trapezoid and three sectors
Trapezoid and three sectors /
Travel distance and railway fare
Travel distance and railway fare /
Triangle and trapezoid
Triangle and trapezoid /
Triangle in hexagon
Triangle in hexagon /
Triangle in rectangle
Triangle in rectangle /
Triangular pyramid from rectangular paper
Triangular pyramid from rectangular paper /
Triathlon race
Triathlon race /
Two circles with a shaded area
Two circles with a shaded area /
Two different styles of moving
Two different styles of moving /
Two persons go to house each other
Two persons go to house each other /
Two persons meet and janken
Two persons meet and janken /
Two persons move on a rectangle
Two persons move on a rectangle /
Two persons moving around a pond
Two persons moving around a pond /
Two persons roll a die
Two persons roll a die /
Two persons' moving by bicycle
Two persons' moving by bicycle /
Two points between school and park
Two points between school and park /
Two points moving on a diameter
Two points moving on a diameter /
Two squares and one circle
Two squares and one circle /
Two way speed walking on the escalator
Two way speed walking on the escalator /
Visitors' line at aquarium
Visitors' line at aquarium /
Walk along riverside and ship in the river
Walk along riverside and ship in the river /
Walk on 40 steps escalator
Walk on 40 steps escalator /
Walk to the next bus stop
Walk to the next bus stop /
Walking and running around a pond
Walking and running around a pond /
Water and wine in two vessels
Water and wine in two vessels /
Water into three tanks
Water into three tanks /
Water moves in three tanks
Water moves in three tanks /
Which house is whose
Which house is whose /
Whistle from express train
Whistle from express train /
Year of Showa era and A.D.
Year of Showa era and A.D. /
Level 3
365 cards with date of one year
365 cards with date of one year /
Area ratio divided in parallelogram
Area ratio divided in parallelogram /
Area ratio divided in parallelogram
Area ratio divided in sector
Area ratio divided in sector /
Area ratio divided in triangle
Area ratio divided in triangle /
Arrangement of squares in order
Arrangement of squares in order /
Candies for children gathering
Candies for children gathering /
Change of gas rate in several months
Change of gas rate in several months /
Circle moving around a figure
Circle moving around a figure /
Circle moving around hexagon
Circle moving around hexagon /
Compare area of black and white square
Compare area of black and white square /
Connected parallelograms
Connected parallelograms /
Cut another quadrangular pyramid
Cut another quadrangular pyramid /
Cut piling up eight cubes
Cut piling up eight cubes /
Cut rectangular prism with planes parallel to faces
Cut rectangular prism with planes parallel to faces /
Cut right quadrangular pyramid
Cut right quadrangular pyramid /
Cut surface of cube
Cut surface of cube /
Cutting line based on development view
Cutting line based on development view /
Development view of solid with six faces of lozenge
Development view of solid with six faces of lozenge /
Election of class representative
Election of class representative /
Find the road to paradise
Find the road to paradise /
Find the way to go
Find the way to go /
Going back and forth two points
Going back and forth two points /
Hollowing out rectangular prism
Hollowing out rectangular prism /
Hour hand, minute hand and second hand
Hour hand, minute hand and second hand /
Lottery of "Amidakuji"
Lottery of "Amidakuji" /
Multiple of continued integers
Multiple of continued integers /
Multiple of every number of each digit
Multiple of every number of each digit /
Number of cut to make development view
Number of cut to make development view /
Number of dice to be cut or not
Number of dice to be cut or not /
Number of inverse order
Number of inverse order /
Number of songs at concerts
Number of songs at concerts /
Overlapping hexagon and heptagon
Overlapping hexagon and heptagon /
Paint inside of rectangular prism
Paint inside of rectangular prism /
Partition of right triangle
Partition of right triangle /
Piling up cubes and cut
Piling up cubes and cut /
Piling up cubes and put red seals
Piling up cubes and put red seals /
Put 1~8 in a frame
Put 1~8 in a frame /
Put 48 balls into five boxes
Put 48 balls into five boxes /
Put water in four vessels
Put water in four vessels /
Questionnaire on three subjects
Questionnaire on three subjects /
Quotient is rounded off at 1st decimal place
Quotient is rounded off at 1st decimal place /
Rectangle moves and overlaps triangle
Rectangle moves and overlaps triangle /
Rectangular prism and triangular pyramid
Rectangular prism and triangular pyramid /
Reflection in rectangle
Reflection in rectangle /
Removing cards based on the rule
Removing cards based on the rule /
Replacement of long hand and hour hand
Replacement of long hand and hour hand /
Right dodecagon
Right dodecagon /
Same birthday in the class of 50 people
Same birthday in the class of 50 people /
Shadow of block by streetlight
Shadow of block by streetlight /
Shadow of box by stand light
Shadow of box by stand light /
Shadow of rectangular wall
Shadow of rectangular wall /
Solid made by cutting cylinder
Solid made by cutting cylinder /
Square moves in a triangle
Square moves in a triangle /
Square pyramid and homothetic ratio
Square pyramid and homothetic ratio /
Straight line dividing figure into three
Straight line dividing figure into three /
Sum total of every number of each digit
Sum total of every number of each digit /
Table of integers written clockwise
Table of integers written clockwise /
Take out balls from the bag
Take out balls from the bag /
Tape winded around rectangular board
Tape winded around rectangular board /
Taxi fare of two types of cars
Taxi fare of two types of cars /
Ten students roll three dice
Ten students roll three dice /
The 3rd hand on a circular clock
The 3rd hand on a circular clock /
Three blue cards and five red cards
Three blue cards and five red cards /
Three persons moving on a circular pond
Three persons moving on a circular pond /
Three points moving on a circumference
Three points moving on a circumference /
Three points moving on a rectangle
Three points moving on a rectangle /
Time of display of crossing for trains
Time of display of crossing for trains /
Triangle covered by squares
Triangle covered by squares /
Triangle of integers written counterclockwise
Triangle of integers written counterclockwise /
Two circles moving in triangle
Two circles moving in triangle /
Two machines displaying numbers on the rule
Two machines displaying numbers on the rule /
Two persons moving on an annular road
Two persons moving on an annular road /
Two persons walking on a moving walkway
Two persons walking on a moving walkway /
Two points moving in a square
Two points moving in a square /
Vessel, water and bar
Vessel, water and bar /
Volleyball tournament of five teams
Volleyball tournament of five teams /
Volume ratio after cutting rectangular prism
Volume ratio after cutting rectangular prism /
Way of putting spots on the die
Way of putting spots on the die /
Level 4
Image solid from development view
Image solid from development view /
Round the 3rd digit from the top of number
Round the 3rd digit from the top of number /
New Drill
Photo
Google +
Mt. Fuji
Photo/Movies
Updates
DD23 updated
DD29 updated
DDD8 updated
Exam.L1 updated
Exam.L1 Updated
Exam.L1 updated
Exam.L1 Updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 updated
Exam.L1 Updated
Exam.L2 undated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L2 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3 updated
Exam.L3. updated
II17 is deleted
KK.14 is deleted
New problems
Problems of Level 1~3 are posted
Six digits integer
When integer of 6 digits 5ABC15 becomes a multiple of 999, find the integer ABC of 3 digits.
Answer
Google Sites
Report abuse
Page details
Page updated
Google Sites
Report abuse