Addition Worksheet

Solve.

1 a. ______ + 89 = 100
1 b. ______ + 25 = 100
2 a. 27 + ______ = 100
2 b. 30 + ______ = 100
3 a. ______ + 56 = 100
3 b. ______ + 98 = 100
4 a. 53 + ______ = 100
4 b. 1 + ______ = 100
5 a. 58 + ______ = 100
5 b. ______ + 84 = 100
6 a. ______ + 57 = 100
6 b. ______ + 99 = 100
7 a. 42 + ______ = 100
7 b. ______ + 59 = 100
8 a. ______ + 86 = 100
8 b. ______ + 51 = 100
9 a. ______ + 34 = 100
9 b. 25 + ______ = 100
10 a. 55 + ______ = 100
10 b. 39 + ______ = 100
Page 2

Answer Key

1 a. 11    
1 b. 75    
2 a. 73    
2 b. 70    
3 a. 44    
3 b. 2    
4 a. 47    
4 b. 99    
5 a. 42    
5 b. 16    
6 a. 43    
6 b. 1    
7 a. 58    
7 b. 41    
8 a. 14    
8 b. 49    
9 a. 66    
9 b. 75    
10 a. 45    
10 b. 61    


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