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Channel: Operations & Algebraic Thinking – Open Middle™
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Decomposing Numbers Less Than Or Equal to 10

Directions: Add spots to the dog to equal 10 Hint Hint How can you tell if the dogs’s spots will equal 10? Answer Answer Answers will vary but will add together to equal 10. Source: Unknown

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Sum of 5

Directions: I rolled 2 dice and when I counted the pips (dots), there were 5 altogether. What could I have rolled on the dice? I rolled again and got 5 again, but I didn’t get the same numbers as...

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Domino Friends of Ten

Directions: I picked 3 dominoes out of a bag and they all had exactly 10 pips, but the same number was not on both sides of any of the dominoes. Show 3 dominoes I could have picked. Hint Hint If one...

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Adding One-Digit Numbers (< 5)

Directions: Use the digits 1 to 5, at most one time each, to fill in the boxes to create two true number sentences. HintHint What is the largest sum you could have? What are the largest addends you...

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Adding One-Digit Numbers (< 5) 2

Directions: Use the digits 1 to 5, at most one time each, to fill in the boxes to create a true number sentences with the greatest possible sum. HintHint What is the largest sum you could have? What...

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Adding and Subtracting Within 10

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make a true statement. HintHint How can you represent your equation using pictures? What does the equals sign mean?...

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