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Operations & Algebraic Thinking

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. Source: Brian Kelley

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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 before. What could my new roll be? Source: Brian Kelley

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