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











