fact-family/add-sub-within-20/easy · セット 67
6 problems
名前：
クラス:
日付：
1
Write the fact family for 2, 7, 9:
=
2
Write the fact family for 16, 4, 20:
=
3
Write the fact family for 1, 6, 7:
=
4
Write the fact family for 18, 1, 19:
=
5
Write the fact family for 16, 3, 19:
=
6
Write the fact family for 17, 2, 19:
=