1
Fact family for {1, 3, 4}: Write all 4 equations =
2
Fact family for {10, 9, 19}: Write all 4 equations =
3
Fact family for {8, 9, 17}: Write all 4 equations =
4
Fact family for {8, 7, 15}: Write all 4 equations =
5
Fact family for {4, 1, 5}: Write all 4 equations =
6
Fact family for {2, 4, 6}: Write all 4 equations =