fact-family/add-sub-within-10/expert · 套题 42

6 problems
1
Write the fact family for 5, 4, 9: =
2
Write the fact family for 7, 1, 8: =
3
Write the fact family for 2, 6, 8: =
4
Write the fact family for 3, 7, 10: =
5
Write the fact family for 2, 8, 10: =
6
Write the fact family for 8, 4, 32: =
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