fact-family/add-sub-within-20-fill-blanks · セット 19
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 8, 9, 17:
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3
Write the fact family for 19, 1, 20:
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4
Write the fact family for 17, 2, 19:
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5
Write the fact family for 14, 3, 17:
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6
Write the fact family for 16, 1, 17:
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