number-bonds/addition-bonds/medium · 套题 91
8 problems
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1
Complete the number bond: 7 __ + 1
=
2
Number bond: 3 1 + ?
=
3
7 5 + __
=
4
Complete the number bond: 4 2 + __
=
5
6 2 + __
=
6
Number bond: 8 4 + ?
=
7
6 4 + __
=
8
2 __ + 1
=