fact-family/mul-div-within-20-fill-blanks · 套题 56
5 problems
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1
Write the fact family for 9, 4, 13:
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2
Write the fact family for 19, 1, 20:
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3
Write the fact family for 11, 1, 12:
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4
Write the fact family for 3, 15, 18:
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5
Write the fact family for 4, 3, 7:
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