1
Fact family for {19, 2, 21}: Write all 4 equations =
2
Fact family for {12, 5, 17}: Write all 4 equations =
3
Fact family for {1, 8, 9}: Write all 4 equations =
4
Fact family for {3, 17, 20}: Write all 4 equations =
5
Fact family for {11, 14, 25}: Write all 4 equations =
6
Fact family for {13, 20, 33}: Write all 4 equations =