O. Fact Families
Complete the number sentences for each fact family.
- 8 +
= 11
+ 8 = 11
- 11 −
= 8
− 8 = 3
- 4 +
= 10
- 10 −
= 6
- 10 −
= 4
+ 4 = 10
- 6 +
= 9
+ 6 = 9
- 9 −
= 3
− 3 = 6
- 7 +
= 10
+ 7 = 10
- 10 −
= 3
- 10 −
= 7
- 5 +
= 11
- 11 −
= 6
- 11 −
= 5
+ 5 = 11