1
Fact family for {2, 1, 3}: Write all 4 equations =
2
Fact family for {5, 1, 6}: Write all 4 equations =
3
Fact family for {10, 9, 19}: Write all 4 equations =
4
Fact family for {3, 10, 13}: Write all 4 equations =
5
Fact family for {8, 3, 11}: Write all 4 equations =
6
Fact family for {6, 9, 15}: Write all 4 equations =