fact-family/mixed-within-20-fill-blanks · セット 19
6 problems
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日付：
1
Write the fact family for 14, 6, 20:
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2
Write the fact family for 6, 5, 11:
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3
Write the fact family for 19, 1, 20:
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4
Write the fact family for 3, 8, 11:
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5
Write the fact family for 3, 11, 14:
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6
Write the fact family for 7, 5, 12:
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