Directions: Old Mother Hubbard is baking cookies so her cupboards won’t be bare anymore! She bakes 109 cookies in all. She bakes the cookies on 4 cookie sheets. Each cookie sheet is arranged into equal rows and columns, but not every cookie sheet has the same number of rows and columns. Using digits 0-9, at most once, how might the …

Read More »# Operations & Algebraic Thinking

## Composite Numbers

Directions: Use the digits 1 to 9, at most one time each, to make 5 composite numbers. Source: Owen Kaplinsky

Read More »## Prime Numbers

Directions: Use the digits 1 to 9, at most one time each, to make 5 prime numbers. Source: Owen Kaplinsky

Read More »## Divisibility

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to create a three-digit number. Try to create a three-digit number divisible by the greatest (or fewest) amount of the following factors: 2, 3, 4, 5, 6, 8, 9 or 10. Source: Kelly Zinck

Read More »## Divisibility 2

Directions: What is the smallest number, greater than zero, that is divisible by 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10? Source: Brian Lack

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