fact-family/mul-div-within-20-write-all · 套题 50
6 problems
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1
Write the fact family for 15, 3, 18:
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2
Write the fact family for 17, 3, 20:
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3
Write the fact family for 19, 1, 20:
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4
Write the fact family for 5, 8, 13:
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5
Write the fact family for 6, 13, 19:
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6
Write the fact family for 15, 1, 16:
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