Addition Worksheet

Solve.

1 a. ______ + 10 = 25
1 b. 40 + ______ = 138
2 a. 66 + ______ = 106
2 b. ______ + 64 = 74
3 a. ______ + 20 = 80
3 b. 79 + ______ = 169
4 a. 82 + ______ = 182
4 b. 52 + ______ = 142
5 a. 11 + ______ = 51
5 b. 61 + ______ = 91
6 a. ______ + 50 = 61
6 b. 50 + ______ = 102
7 a. 50 + ______ = 85
7 b. 89 + ______ = 179
8 a. ______ + 67 = 77
8 b. ______ + 50 = 74
9 a. 97 + ______ = 127
9 b. 62 + ______ = 132
10 a. ______ + 56 = 146
10 b. 20 + ______ = 47
Page 2

Answer Key

1 a. 15    
1 b. 98    
2 a. 40    
2 b. 10    
3 a. 60    
3 b. 90    
4 a. 100    
4 b. 90    
5 a. 40    
5 b. 30    
6 a. 11    
6 b. 52    
7 a. 35    
7 b. 90    
8 a. 10    
8 b. 24    
9 a. 30    
9 b. 70    
10 a. 90    
10 b. 27    


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