fact-family/add-sub-within-20/easy · セット 37
6 problems
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クラス:
日付：
1
Write the fact family for 17, 3, 20:
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2
Write the fact family for 9, 8, 17:
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3
Write the fact family for 9, 1, 10:
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4
Write the fact family for 2, 8, 10:
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5
Write the fact family for 6, 13, 19:
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6
Write the fact family for 8, 9, 17:
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