Addition Worksheet

Solve.

1 a. ______ + 30 = 90
 
1 b. ______ + 40 = 130
 
2 a. 90 + ______ = 180
 
2 b. 60 + ______ = 100
 
3 a. 90 + ______ = 130
 
3 b. 10 + ______ = 30
 
4 a. ______ + 40 = 80
 
4 b. ______ + 60 = 100
 
5 a. ______ + 70 = 90
 
5 b. ______ + 70 = 80
 
6 a. 10 + ______ = 90
 
6 b. 50 + ______ = 90
 
7 a. ______ + 60 = 80
 
7 b. 40 + ______ = 110
 
8 a. ______ + 40 = 60
 
8 b. ______ + 10 = 100
 
9 a. 70 + ______ = 80
 
9 b. ______ + 40 = 100
 
10 a. ______ + 10 = 20
 
10 b. ______ + 80 = 120
 
Page 2

Answer Key

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


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