Addition Worksheet

Solve.

1 a. ______ + 70 = 120
1 b. ______ + 60 = 120
2 a. ______ + 70 = 140
2 b. 50 + ______ = 60
3 a. 20 + ______ = 90
3 b. ______ + 10 = 20
4 a. 70 + ______ = 130
4 b. ______ + 40 = 60
5 a. 10 + ______ = 70
5 b. ______ + 80 = 120
6 a. 50 + ______ = 130
6 b. 40 + ______ = 120
7 a. 20 + ______ = 50
7 b. 70 + ______ = 80
8 a. 40 + ______ = 100
8 b. 10 + ______ = 20
9 a. ______ + 50 = 70
9 b. ______ + 20 = 100
Page 2

Answer Key

1 a. 50    
1 b. 60    
2 a. 70    
2 b. 10    
3 a. 70    
3 b. 10    
4 a. 60    
4 b. 20    
5 a. 60    
5 b. 40    
6 a. 80    
6 b. 80    
7 a. 30    
7 b. 10    
8 a. 60    
8 b. 10    
9 a. 20    
9 b. 80    


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