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.

1511___
18___8
12___9
3___1
___119
21___
10___5
15___2
___21
13___11
51___
17___10
86___
1713___
20___15
11___5
19___9
1910___
85___
10___7
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