1
Fact family for {4, 5, 9}: Write all 4 equations =
2
Fact family for {10, 9, 19}: Write all 4 equations =
3
Fact family for {6, 7, 13}: Write all 4 equations =
4
Fact family for {8, 3, 11}: Write all 4 equations =
5
Fact family for {2, 5, 7}: Write all 4 equations =
6
Fact family for {4, 1, 5}: Write all 4 equations =