1
Fact family for {1, 2, 3}: Write all 4 equations =
2
Fact family for {4, 7, 11}: Write all 4 equations =
3
Fact family for {7, 8, 15}: Write all 4 equations =
4
Fact family for {6, 7, 13}: Write all 4 equations =
5
Fact family for {9, 2, 11}: Write all 4 equations =
6
Fact family for {8, 7, 15}: Write all 4 equations =