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
Complete the number sentences for each fact family.