number-bonds/addition-bonds/easy · 套题 93
6 problems
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1
2 __ + 1
=
2
Number bond: 5 + 3
=
3
Complete the number bond: 2 __ + 1
=
4
Number bond: 3 2 + ?
=
5
Complete the number bond: 3 2 + __
=
6
5 4 + __
=