Addition Worksheet

Solve.

1 a. ______ + 50 = 110
1 b. 30 + ______ = 90
2 a. 60 + ______ = 120
2 b. ______ + 70 = 120
3 a. ______ + 10 = 40
3 b. 80 + ______ = 100
4 a. 40 + ______ = 60
4 b. ______ + 40 = 100
5 a. 10 + ______ = 50
5 b. 20 + ______ = 80
6 a. 20 + ______ = 70
6 b. ______ + 10 = 90
7 a. ______ + 40 = 130
7 b. 40 + ______ = 110
8 a. 80 + ______ = 90
8 b. ______ + 40 = 50
9 a. ______ + 20 = 50
9 b. ______ + 30 = 50
10 a. 30 + ______ = 60
10 b. 80 + ______ = 120
Page 2

Answer Key

1 a. 60    
1 b. 60    
2 a. 60    
2 b. 50    
3 a. 30    
3 b. 20    
4 a. 20    
4 b. 60    
5 a. 40    
5 b. 60    
6 a. 50    
6 b. 80    
7 a. 90    
7 b. 70    
8 a. 10    
8 b. 10    
9 a. 30    
9 b. 20    
10 a. 30    
10 b. 40    


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