fact-family/add-sub-within-100/medium · 세트 10

6 problems
1
Fact family for {7, 3, 10}: Write all 4 equations =
2
Fact family for {1, 4, 5}: Write all 4 equations =
3
Fact family for {2, 2, 4}: Write all 2 equations =
4
Fact family for {5, 10, 15}: Write all 4 equations =
5
Fact family for {9, 9, 18}: Write all 2 equations =
6
Fact family for {2, 9, 11}: Write all 4 equations =
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