fact-family/add-sub-within-20/medium · セット 61
6 problems
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日付：
1
Write the fact family for 5, 1, 6:
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2
Write the fact family for 2, 6, 8:
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3
Write the fact family for 9, 10, 19:
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4
Write the fact family for 6, 5, 30:
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5
Write the fact family for 8, 12, 96:
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6
Write the fact family for 5, 11, 55:
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