number-bonds/addition-bonds/medium · 套题 1
8 problems
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班级:
日期:
1
___ + 2 3
=
2
___ + 9 10
=
3
___ + 1 2
=
4
___ + 4 5
=
5
___ + 1 2
=
6
4 + ___ 8
=
7
___ + 9 10
=
8
2 + ___ 5
=