fact-family/mixed-within-20-write-all · セット 59
6 problems
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日付：
1
Write the fact family for 6, 5, 11:
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2
Write the fact family for 16, 2, 18:
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3
Write the fact family for 6, 9, 15:
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4
Write the fact family for 3, 11, 14:
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5
Write the fact family for 1, 18, 19:
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6
Write the fact family for 18, 2, 20:
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