Common Core: 3.NBT — Number & Operations in Base Ten
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Name
Date
Score
/ 10
Break Apart Strategy 4
Directions: Solve in your head. Use the strategy label to help.
1.
Compensation
21 + 13 =
Show your thinking
2.
Compensation
21 + 11 =
Show your thinking
3.
Compensation
31 + 10 =
Show your thinking
4.
Compensation
31 + 8 =
Show your thinking
5.
Compensation
31 + 6 =
Show your thinking
6.
Compensation
41 + 15 =
Show your thinking
7.
Compensation
41 + 13 =
Show your thinking
8.
Compensation
41 + 12 =
Show your thinking
9.
Compensation
9 + 10 =
Show your thinking
10.
Compensation
9 + 8 =
Show your thinking
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