fact-family/add-sub-within-10/medium · 세트 33

5 problems
1
Write the fact family for 7, 2, 9: =
2
Write the fact family for 3, 5, 15: =
3
Write the fact family for 9, 1, 10: =
4
Write the fact family for 8, 2, 10: =
5
Write the fact family for 8, 5, 40: =
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