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