Addition Worksheet

Solve.

1 a. ______ + 20 + 60 + 60 = 160
 
1 b. ______ + 80 + 40 + 10 = 170
 
2 a. 80 + 40 + 80 + ______ = 220
 
2 b. ______ + 10 + 70 + 90 = 230
 
3 a. 90 + ______ + 70 + 70 = 280
 
3 b. 20 + 30 + ______ + 70 = 190
 
4 a. 30 + 40 + ______ + 10 = 170
 
4 b. ______ + 10 + 10 + 30 = 100
 
5 a. 50 + 80 + ______ + 80 = 300
 
5 b. 40 + 20 + 80 + ______ = 170
 
6 a. 10 + ______ + 80 + 70 = 170
 
6 b. ______ + 70 + 40 + 80 = 240
 
7 a. 50 + ______ + 50 + 60 = 250
 
7 b. ______ + 60 + 20 + 80 = 170
 
8 a. ______ + 40 + 60 + 80 = 250
 
8 b. 90 + 20 + 80 + ______ = 230
 
Page 2

Answer Key

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

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