fact-family/mul-div-10-12/hard · セット 86
6 problems
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日付：
1
Write the fact family for 4, 5, 20:
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2
Write the fact family for 6, 5, 30:
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3
Write the fact family for 5, 10, 50:
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4
Write the fact family for 10, 3, 30:
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5
Write the fact family for 2, 10, 20:
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6
Write the fact family for 4, 9, 36:
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