Addition Worksheet

Solve.

1 a. ______ + 40 = 123
1 b. ______ + 18 = 68
2 a. 71 + ______ = 161
2 b. ______ + 10 = 43
3 a. 10 + ______ = 75
3 b. ______ + 22 = 112
4 a. 20 + ______ = 108
4 b. ______ + 60 = 150
5 a. 10 + ______ = 108
5 b. 27 + ______ = 37
6 a. ______ + 41 = 131
6 b. 83 + ______ = 133
7 a. 39 + ______ = 129
7 b. ______ + 80 = 101
8 a. 34 + ______ = 104
8 b. ______ + 60 = 134
9 a. ______ + 59 = 99
9 b. 20 + ______ = 52
10 a. 50 + ______ = 100
10 b. 16 + ______ = 26
Page 2

Answer Key

1 a. 83    
1 b. 50    
2 a. 90    
2 b. 33    
3 a. 65    
3 b. 90    
4 a. 88    
4 b. 90    
5 a. 98    
5 b. 10    
6 a. 90    
6 b. 50    
7 a. 90    
7 b. 21    
8 a. 70    
8 b. 74    
9 a. 40    
9 b. 32    
10 a. 50    
10 b. 10    


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