fact-family/mixed/hard · 세트 1

6 problems
1
Fact family for {8, 4, 12}: Write all 4 equations =
2
Fact family for {8, 3, 11}: Write all 4 equations =
3
Fact family for {7, 5, 12}: Write all 4 equations =
4
Fact family for {3, 10, 13}: Write all 4 equations =
5
Fact family for {10, 2, 12}: Write all 4 equations =
6
Fact family for {9, 1, 10}: Write all 4 equations =
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