# Tag Archives: DOK 3: Strategic Thinking

## Adding and Subtracting Two-Digit Whole Numbers

Directions: Directions: Use the digits 0 to 9, at most one time each, to make a true statement. Source: Brian Errey

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 …

## Multiplying Fractions 4

Directions: Using the digits 1 to 9 at most once each time, fill the boxes to make the greatest possible product. Source: Marc DeArmond

## Prime Factorization 2

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make the greatest possible product. Source: Robert Kaplinsky

## Adding Parts of a Whole

Directions: Using the digits 1 to 9, at most one time each, make the following statement true. Source: Miles Knight

## Greatest Difference of Two Decimal Numbers

Directions: Using the digits 0 to 9, at most one time each, fill in the boxes to create two numbers that both round to 5 and have the greatest (or least) possible difference with 5. Each digit may only be used once. Source: Mike Wiernicki

## Order of Operations 6

Directions: Using the digits 1 to 5, at most one time each, place a digit in each box to create an expression with the largest possible value. Source: Matt Donahue

## Using 1/2 as a Benchmark

Directions: Using the digits 1 through 9 only one time each, fill in the blanks to make true statements. For the fraction less than 1/2, try to make the greatest number possible. For the fraction greater than 1/2, try to make the least number possible. Source: Alyson Eaglen