Addition Worksheet

Solve.

1 a. 90 + ______ = 150
 
1 b. ______ + 60 = 130
 
2 a. ______ + 70 = 160
 
2 b. 60 + ______ = 150
 
3 a. ______ + 90 = 150
 
3 b. ______ + 80 = 150
 
4 a. ______ + 60 = 90
 
4 b. ______ + 90 = 120
 
5 a. ______ + 40 = 70
 
5 b. ______ + 10 = 40
 
6 a. ______ + 20 = 70
 
6 b. 80 + ______ = 110
 
7 a. 70 + ______ = 130
 
7 b. 40 + ______ = 70
 
8 a. ______ + 50 = 110
 
8 b. ______ + 30 = 110
 
9 a. ______ + 90 = 160
 
9 b. 40 + ______ = 120
 
10 a. 30 + ______ = 40
 
10 b. ______ + 80 = 100
 
Page 2

Answer Key

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


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