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