Addition Worksheet

Solve.

1 a. ______ + 70 + 30 + 90 = 280
 
1 b. ______ + 20 + 70 + 60 = 190
 
2 a. 30 + 40 + 30 + ______ = 180
 
2 b. ______ + 10 + 40 + 80 = 200
 
3 a. 80 + 50 + ______ + 20 = 160
 
3 b. 20 + 80 + 20 + ______ = 160
 
4 a. ______ + 60 + 20 + 10 = 150
 
4 b. 60 + 50 + 30 + ______ = 210
 
5 a. _________ + 80 + 80 + 60 = 260
 
5 b. 80 + 80 + 20 + ______ = 230
 
6 a. 20 + 60 + 10 + ______ = 180
 
6 b. ______ + 50 + 80 + 30 = 220
 
7 a. ______ + 30 + 20 + 60 = 130
 
7 b. 50 + 10 + 60 + ______ = 200
 
Page 2

Answer Key

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


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