Addition Worksheet

Solve.

1 a. ______ + 40 + 50 + 10 = 160
 
1 b. ______ + 10 + 30 + 90 = 140
 
2 a. 50 + ______ + 60 + 70 = 240
 
2 b. 80 + 30 + 40 + ______ = 210
 
3 a. 10 + 80 + 70 + ______ = 250
 
3 b. 10 + 50 + ______ + 30 = 100
 
4 a. 10 + 80 + 40 + ______ = 140
 
4 b. 50 + _________ + 80 + 80 = 270
 
5 a. ______ + 40 + 20 + 60 = 190
 
5 b. 40 + 80 + 30 + ______ = 190
 
6 a. ______ + 60 + 90 + 70 = 300
 
6 b. ______ + 10 + 60 + 80 = 240
 
7 a. 10 + 80 + ______ + 20 = 170
 
7 b. 60 + 10 + 40 + ______ = 130
 
8 a. ______ + 10 + 90 + 80 = 230
 
8 b. 30 + ______ + 10 + 40 = 90
 
Page 2

Answer Key

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


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