fact-family/add-sub-within-20/easy · セット 98
6 problems
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クラス:
日付：
1
Write the fact family for 6, 11, 17:
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2
Write the fact family for 4, 13, 17:
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3
Write the fact family for 16, 1, 17:
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4
Write the fact family for 12, 5, 17:
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5
Write the fact family for 19, 1, 20:
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6
Write the fact family for 10, 10, 20:
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