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"Sansue" = Japanese Math for Kids V.2
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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
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New problems
Problems of Level 1~3 are posted
"Sansue" = Japanese Math for Kids V.2
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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
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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
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New problems
Problems of Level 1~3 are posted
Share six oranges with four persons
How many ways of giving six oranges to four persons ?
I shall give at least one to everyone.
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