fact-family/add-sub-within-20/hard · セット 29
6 problems
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クラス:
日付：
1
Write the fact family for 3, 3, 9:
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2
Write the fact family for 6, 13, 19:
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3
Write the fact family for 18, 2, 20:
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4
Write the fact family for 9, 4, 36:
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5
Write the fact family for 5, 9, 45:
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6
Write the fact family for 4, 4, 16:
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