Addition Worksheet

Solve.

1 a. 90 + ______ + 30 + 40 = 180
 
1 b. 20 + ______ + 20 + 80 = 160
 
2 a. _________ + 80 + 70 + 70 = 280
 
2 b. 20 + 50 + 80 + ______ = 240
 
3 a. 20 + 60 + ______ + 50 = 170
 
3 b. 30 + 50 + 20 + ______ = 140
 
4 a. 70 + 40 + ______ + 60 = 230
 
4 b. ______ + 50 + 30 + 30 = 170
 
5 a. 60 + 10 + ______ + 10 = 100
 
5 b. 50 + 70 + 90 + ______ = 240
 
6 a. _________ + 90 + 90 + 60 = 280
 
6 b. 20 + 30 + 70 + ______ = 210
 
7 a. 40 + 50 + 90 + ______ = 210
 
7 b. ______ + 60 + 30 + 10 = 170
 
Page 2

Answer Key

1 a. 20    
1 b. 40    
2 a. 60    
2 b. 90    
3 a. 40    
3 b. 40    
4 a. 60    
4 b. 60    
5 a. 20    
5 b. 30    
6 a. 40    
6 b. 90    
7 a. 30    
7 b. 70    


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