fact-family/mul-div-within-20-write-all · 套题 65
6 problems
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1
Write the fact family for 3, 12, 15:
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2
Write the fact family for 11, 2, 13:
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3
Write the fact family for 3, 17, 20:
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4
Write the fact family for 2, 7, 9:
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5
Write the fact family for 5, 10, 15:
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6
Write the fact family for 6, 8, 14:
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