fact-family/mul-div-within-20-write-all · 세트 99

6 problems
1
Write the fact family for 18, 1, 19: =
2
Write the fact family for 11, 4, 15: =
3
Write the fact family for 11, 8, 19: =
4
Write the fact family for 14, 3, 17: =
5
Write the fact family for 13, 4, 17: =
6
Write the fact family for 15, 1, 16: =
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