Common Core: 3.NBT — Number & Operations in Base Ten
Grade 3 • mental-math • Beginner
Break Apart Strategy 2
More break apart
10 problems
1.
Compensation
11 + 6 =
Show your thinking:
2.
Compensation
21 + 15 =
Show your thinking:
3.
Compensation
21 + 13 =
Show your thinking:
4.
Compensation
21 + 11 =
Show your thinking:
5.
Compensation
31 + 10 =
Show your thinking:
6.
Compensation
31 + 8 =
Show your thinking:
7.
Compensation
31 + 6 =
Show your thinking:
8.
Compensation
41 + 15 =
Show your thinking:
9.
Compensation
41 + 13 =
Show your thinking:
10.
Compensation
41 + 12 =
Show your thinking: