fact-family/mixed-within-20-write-all · セット 22
4 problems
名前：
クラス:
日付：
1
Write the fact family for 18, 2, 20:
=
2
Write the fact family for 17, 2, 19:
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3
Write the fact family for 5, 1, 6:
=
4
Write the fact family for 8, 1, 9:
=