Common Core: 2.NBT — Number & Operations in Base Ten
Grade 2 • mental-math • Easy
Compensation Strategy 5
Master compensation
8 problems
1.
Compensation
39 + 9 =
Show your thinking:
2.
Compensation
49 + 7 =
Show your thinking:
3.
Compensation
49 + 5 =
Show your thinking:
4.
Compensation
49 + 15 =
Show your thinking:
5.
Compensation
11 + 13 =
Show your thinking:
6.
Compensation
11 + 11 =
Show your thinking:
7.
Compensation
11 + 9 =
Show your thinking:
8.
Compensation
21 + 7 =
Show your thinking: