fact-family/add-sub-within-20-write-all · セット 17
6 problems
名前：
クラス:
日付：
1
Write the fact family for 19, 1, 20:
=
2
Write the fact family for 15, 4, 19:
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3
Write the fact family for 16, 2, 18:
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4
Write the fact family for 17, 2, 19:
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5
Write the fact family for 3, 12, 15:
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6
Write the fact family for 16, 4, 20:
=