Addition Worksheet

Solve.

1 a. 60 + ______ + 80 + 30 = 210
 
1 b. 50 + 60 + 20 + ______ = 210
 
2 a. 20 + ______ + 90 + 50 = 210
 
2 b. 60 + ______ + 20 + 80 = 170
 
3 a. ______ + 30 + 50 + 60 = 230
 
3 b. ______ + 20 + 80 + 50 = 160
 
4 a. ______ + 10 + 40 + 90 = 210
 
4 b. 30 + 20 + ______ + 10 = 90
 
5 a. 10 + 90 + 80 + ______ = 250
 
5 b. ______ + 60 + 50 + 20 = 220
 
6 a. 60 + ______ + 50 + 60 = 250
 
6 b. ______ + 70 + 70 + 40 = 260
 
7 a. 90 + 50 + 90 + ______ = 240
 
7 b. 40 + ______ + 40 + 60 = 200
 
8 a. 40 + ______ + 20 + 10 = 160
 
8 b. 80 + 40 + ______ + 80 = 250
 
Page 2

Answer Key

1 a. 40    
1 b. 80    
2 a. 50    
2 b. 10    
3 a. 90    
3 b. 10    
4 a. 70    
4 b. 30    
5 a. 70    
5 b. 90    
6 a. 80    
6 b. 80    
7 a. 10    
7 b. 60    
8 a. 90    
8 b. 50    

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