number-bonds/addition-bonds/hard · セット 59

7 problems
1
Number bond: 3 1 + ? =
2
4 __ + 2 =
3
3 __ + 1 =
4
2 1 + __ =
5
Complete the number bond: 8 6 + __ =
6
9 __ + 5 =
7
Number bond: 10 + 4 =
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