fact-family/mul-div-6-9/expert · 套题 49
6 problems
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1
Write the fact family for 2, 7, 9:
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2
Write the fact family for 4, 9, 36:
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3
Write the fact family for 2, 10, 20:
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4
Write the fact family for 6, 3, 9:
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5
Write the fact family for 2, 2, 4:
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6
Write the fact family for 4, 10, 40:
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