Addition Worksheet

Solve.

1 a. 50 + 60 + 80 + ______ = 260
 
1 b. ______ + 40 + 10 + 50 = 160
 
2 a. ______ + 30 + 60 + 30 = 140
 
2 b. ______ + 30 + 20 + 90 = 190
 
3 a. 80 + _________ + 40 + 30 = 240
 
3 b. 60 + ______ + 30 + 40 = 170
 
4 a. 60 + ______ + 40 + 20 = 140
 
4 b. ______ + 80 + 30 + 30 = 170
 
5 a. 10 + ______ + 50 + 60 = 180
 
5 b. 70 + 80 + 70 + _________ = 240
 
6 a. 20 + 40 + 30 + ______ = 120
 
6 b. 60 + 60 + 30 + ______ = 210
 
7 a. 80 + ______ + 90 + 50 = 230
 
7 b. 90 + ______ + 10 + 90 = 210
 
8 a. 20 + 10 + 80 + ______ = 170
 
8 b. 40 + 20 + ______ + 90 = 170
 
Page 2

Answer Key

1 a. 70    
1 b. 60    
2 a. 20    
2 b. 50    
3 a. 90    
3 b. 40    
4 a. 20    
4 b. 30    
5 a. 60    
5 b. 20    
6 a. 30    
6 b. 60    
7 a. 10    
7 b. 20    
8 a. 60    
8 b. 20    

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