fact-family/add-sub-within-10/medium · 세트 44

5 problems
1
Write the fact family for 2, 4, 6: =
2
Write the fact family for 6, 5, 30: =
3
Write the fact family for 1, 5, 6: =
4
Write the fact family for 9, 2, 18: =
5
Write the fact family for 10, 4, 40: =
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