1
Fact family for {1, 4, 5}: Write all 4 equations =
2
Fact family for {3, 10, 13}: Write all 4 equations =
3
Fact family for {2, 1, 3}: Write all 4 equations =
4
Fact family for {1, 3, 4}: Write all 4 equations =
5
Fact family for {5, 7, 12}: Write all 4 equations =
6
Fact family for {9, 1, 10}: Write all 4 equations =