fact-family/add-sub-within-20/easy · セット 41
6 problems
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クラス:
日付：
1
Write the fact family for 17, 1, 18:
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2
Write the fact family for 12, 3, 15:
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3
Write the fact family for 1, 13, 14:
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4
Write the fact family for 5, 11, 16:
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5
Write the fact family for 6, 10, 16:
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6
Write the fact family for 2, 7, 9:
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