Number Bonds Worksheet

Fill in the missing numbers to complete each number bond. The two parts at the bottom add up to the whole number at the top.

21___
87___
___21
4___3
5___2
11___10
12___1
___34
1210___
18___5
5___1
17___12
54___
1110___
7___1
13___4
19___5
142___
1512___
10___5
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