FF. Fact Families
- Mara wrote number sentences to show the fact family for
1, 1, and 2.
1 + 1 = 2 2 − 1 = 1
2 + 1 = 1 1 − 2 = 1
Do you agree with her? Why or why not? - Complete the fact family for 2, 5, and 7.
= 5 + 2 _______________
7 − = 5 _______________ - Show the fact family for 1, 8, and 9.
_______________ _______________
_______________ _______________