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Challenge Problems
Home
Book 1 (Yellow)
Coin Quest
On the Way to 200
Just a Matter of Time
A "Month" of Sundays
Six Slices or Eight?
How Many Heads?
Number Cube
Some Sums
Marble Garble
Sasha's Pattern
Three Shapes
Apples and Oranges
Where is 79?
In the Middle
Empty Shapes
Same Sums
The Better Buy
Think "Snow"
Shape Totals
Pounds-a-Plenty
Nine Is Fine
Yikes!
Matthew's Pattern
Get a Homer
Now You See Them...Now You Don't
Try for "A" 13
Figure Out the Figure
Moving Money
Doubly Delicious
A Walking Problem
Number Puzzle
Stamp It!
Birthday Gift
Roll 'Em
Ripped Receipt
The Frosting on the Cake
Watch the Hands
Best Friend
Folding Folly
Who Likes Basketball?
One Brick at a Time
Kids and Bikes
A Mystery
Words Worth
Real or Fake?
Grid of Squares
Pizza with the Works
License Plate Quiz
Full House
Corner Numbers
Book 2 (Orange)
He's First
Table-Tennis Time
Missing Miles
James' Friends
Who's on First?
Mystery Lunch
Bike It!
Least Difference
Thinking in 3's
Super Seller
Woodcutter's Dilemma
On Target
Twinkle, Twinkle
Don't Cry Over Spilled Milk
What's Your Score?
Take a Trip From B to C!
About 1,000
What's in F?
Count Up/Count Down
Replacement Glass
Fraction Action
Unfinished Square
Shape Sentences
A Fish Story
Money Bag
The Truthful Millipede
First or Last?
540, Where Are You?
Turn To Page...
5's and 6's
Ups-In-Downs
Sundae Special
Picture It!
Opposite Faces
Three-Bug House
Big Spender
Music Marathon
Right or Left?
A Real Cut-Up
Sky High
Clip Pattern
How Many (One-) Ways?
Pounds and More Pounds
Stars on Doz
Book 3 (Green)
Petit Fours for 64
The Inheritance
Which Weigh?
Toll Road
A Fishy Story
Will "B" Be the Winner?
Mystery Map
How They Stack Up
How Far to Starr?
CAT + SAT = LATE
Bag It!
Odds-On Favorite
Which One's OUT?
Reflect on Me
What Does n MEAN?
Cycle Sense
Movie Master
Three-Digit Climb
Pick One
Challenge Problems
Home
Book 1 (Yellow)
Coin Quest
On the Way to 200
Just a Matter of Time
A "Month" of Sundays
Six Slices or Eight?
How Many Heads?
Number Cube
Some Sums
Marble Garble
Sasha's Pattern
Three Shapes
Apples and Oranges
Where is 79?
In the Middle
Empty Shapes
Same Sums
The Better Buy
Think "Snow"
Shape Totals
Pounds-a-Plenty
Nine Is Fine
Yikes!
Matthew's Pattern
Get a Homer
Now You See Them...Now You Don't
Try for "A" 13
Figure Out the Figure
Moving Money
Doubly Delicious
A Walking Problem
Number Puzzle
Stamp It!
Birthday Gift
Roll 'Em
Ripped Receipt
The Frosting on the Cake
Watch the Hands
Best Friend
Folding Folly
Who Likes Basketball?
One Brick at a Time
Kids and Bikes
A Mystery
Words Worth
Real or Fake?
Grid of Squares
Pizza with the Works
License Plate Quiz
Full House
Corner Numbers
Book 2 (Orange)
He's First
Table-Tennis Time
Missing Miles
James' Friends
Who's on First?
Mystery Lunch
Bike It!
Least Difference
Thinking in 3's
Super Seller
Woodcutter's Dilemma
On Target
Twinkle, Twinkle
Don't Cry Over Spilled Milk
What's Your Score?
Take a Trip From B to C!
About 1,000
What's in F?
Count Up/Count Down
Replacement Glass
Fraction Action
Unfinished Square
Shape Sentences
A Fish Story
Money Bag
The Truthful Millipede
First or Last?
540, Where Are You?
Turn To Page...
5's and 6's
Ups-In-Downs
Sundae Special
Picture It!
Opposite Faces
Three-Bug House
Big Spender
Music Marathon
Right or Left?
A Real Cut-Up
Sky High
Clip Pattern
How Many (One-) Ways?
Pounds and More Pounds
Stars on Doz
Book 3 (Green)
Petit Fours for 64
The Inheritance
Which Weigh?
Toll Road
A Fishy Story
Will "B" Be the Winner?
Mystery Map
How They Stack Up
How Far to Starr?
CAT + SAT = LATE
Bag It!
Odds-On Favorite
Which One's OUT?
Reflect on Me
What Does n MEAN?
Cycle Sense
Movie Master
Three-Digit Climb
Pick One
More
Home
Book 1 (Yellow)
Coin Quest
On the Way to 200
Just a Matter of Time
A "Month" of Sundays
Six Slices or Eight?
How Many Heads?
Number Cube
Some Sums
Marble Garble
Sasha's Pattern
Three Shapes
Apples and Oranges
Where is 79?
In the Middle
Empty Shapes
Same Sums
The Better Buy
Think "Snow"
Shape Totals
Pounds-a-Plenty
Nine Is Fine
Yikes!
Matthew's Pattern
Get a Homer
Now You See Them...Now You Don't
Try for "A" 13
Figure Out the Figure
Moving Money
Doubly Delicious
A Walking Problem
Number Puzzle
Stamp It!
Birthday Gift
Roll 'Em
Ripped Receipt
The Frosting on the Cake
Watch the Hands
Best Friend
Folding Folly
Who Likes Basketball?
One Brick at a Time
Kids and Bikes
A Mystery
Words Worth
Real or Fake?
Grid of Squares
Pizza with the Works
License Plate Quiz
Full House
Corner Numbers
Book 2 (Orange)
He's First
Table-Tennis Time
Missing Miles
James' Friends
Who's on First?
Mystery Lunch
Bike It!
Least Difference
Thinking in 3's
Super Seller
Woodcutter's Dilemma
On Target
Twinkle, Twinkle
Don't Cry Over Spilled Milk
What's Your Score?
Take a Trip From B to C!
About 1,000
What's in F?
Count Up/Count Down
Replacement Glass
Fraction Action
Unfinished Square
Shape Sentences
A Fish Story
Money Bag
The Truthful Millipede
First or Last?
540, Where Are You?
Turn To Page...
5's and 6's
Ups-In-Downs
Sundae Special
Picture It!
Opposite Faces
Three-Bug House
Big Spender
Music Marathon
Right or Left?
A Real Cut-Up
Sky High
Clip Pattern
How Many (One-) Ways?
Pounds and More Pounds
Stars on Doz
Book 3 (Green)
Petit Fours for 64
The Inheritance
Which Weigh?
Toll Road
A Fishy Story
Will "B" Be the Winner?
Mystery Map
How They Stack Up
How Far to Starr?
CAT + SAT = LATE
Bag It!
Odds-On Favorite
Which One's OUT?
Reflect on Me
What Does n MEAN?
Cycle Sense
Movie Master
Three-Digit Climb
Pick One
Sasha's Pattern
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