fact-family/add-sub-within-20/medium · Sada 3

6 problems
1
Fact family for {10, 7, 17}: Write all 4 equations =
2
Fact family for {5, 7, 12}: Write all 4 equations =
3
Fact family for {8, 4, 12}: Write all 4 equations =
4
Fact family for {7, 7, 14}: Write all 2 equations =
5
Fact family for {6, 4, 10}: Write all 4 equations =
6
Fact family for {10, 1, 11}: Write all 4 equations =
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