Addition Worksheet

Solve.

1 a. ______ + 78 = 168
1 b. 90 + ______ = 140
2 a. 76 + ______ = 176
2 b. ______ + 30 = 41
3 a. ______ + 26 = 66
3 b. 10 + ______ = 22
4 a. 80 + ______ = 135
4 b. ______ + 65 = 105
5 a. ______ + 77 = 107
5 b. 60 + ______ = 103
6 a. 99 + ______ = 159
6 b. ______ + 100 = 177
7 a. ______ + 25 = 65
7 b. ______ + 40 = 124
8 a. ______ + 85 = 145
8 b. ______ + 90 = 146
9 a. 60 + ______ = 111
9 b. 70 + ______ = 140
10 a. 40 + ______ = 138
10 b. 71 + ______ = 121
Page 2

Answer Key

1 a. 90    
1 b. 50    
2 a. 100    
2 b. 11    
3 a. 40    
3 b. 12    
4 a. 55    
4 b. 40    
5 a. 30    
5 b. 43    
6 a. 60    
6 b. 77    
7 a. 40    
7 b. 84    
8 a. 60    
8 b. 56    
9 a. 51    
9 b. 70    
10 a. 98    
10 b. 50    


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