fact-family/add-sub-within-20/easy · 套题 86
6 problems
姓名:
班级:
日期:
1
Write the fact family for 18, 1, 19:
=
2
Write the fact family for 13, 1, 14:
=
3
Write the fact family for 1, 8, 9:
=
4
Write the fact family for 5, 10, 15:
=
5
Write the fact family for 2, 5, 7:
=
6
Write the fact family for 1, 6, 7:
=