Addition Worksheet

Solve.

1 a. 20 + ______ = 110
1 b. 70 + ______ = 160
2 a. ______ + 10 = 70
2 b. ______ + 70 = 140
3 a. ______ + 50 = 60
3 b. ______ + 60 = 130
4 a. ______ + 80 = 90
4 b. 50 + ______ = 60
5 a. ______ + 20 = 80
5 b. ______ + 80 = 110
6 a. ______ + 60 = 90
6 b. ______ + 70 = 130
7 a. ______ + 50 = 90
7 b. ______ + 20 = 110
8 a. ______ + 70 = 160
8 b. ______ + 50 = 100
9 a. 50 + ______ = 80
9 b. ______ + 10 = 40
Page 2

Answer Key

1 a. 90    
1 b. 90    
2 a. 60    
2 b. 70    
3 a. 10    
3 b. 70    
4 a. 10    
4 b. 10    
5 a. 60    
5 b. 30    
6 a. 30    
6 b. 60    
7 a. 40    
7 b. 90    
8 a. 90    
8 b. 50    
9 a. 30    
9 b. 30    


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