fact-family/add-sub-within-20/easy · セット 65
6 problems
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クラス:
日付：
1
Write the fact family for 1, 4, 5:
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2
Write the fact family for 16, 4, 20:
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3
Write the fact family for 15, 4, 19:
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4
Write the fact family for 18, 2, 20:
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5
Write the fact family for 10, 5, 15:
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6
Write the fact family for 13, 6, 19:
=