Addition Worksheet

Solve.

1 a. ______ + 50 + 70 + 90 = 260
 
1 b. 10 + ______ + 10 + 20 = 120
 
2 a. ______ + 90 + 10 + 80 = 270
 
2 b. 70 + 30 + 30 + ______ = 150
 
3 a. 20 + 90 + 60 + ______ = 220
 
3 b. ______ + 90 + 90 + 40 = 230
 
4 a. 10 + 40 + 20 + ______ = 160
 
4 b. ______ + 30 + 10 + 10 = 110
 
5 a. 40 + ______ + 20 + 70 = 160
 
5 b. 20 + 90 + 60 + ______ = 190
 
6 a. 30 + 40 + ______ + 80 = 160
 
6 b. ______ + 90 + 20 + 30 = 160
 
7 a. _________ + 30 + 60 + 80 = 260
 
7 b. 10 + ______ + 80 + 50 = 160
 
Page 2

Answer Key

1 a. 50    
1 b. 80    
2 a. 90    
2 b. 20    
3 a. 50    
3 b. 10    
4 a. 90    
4 b. 60    
5 a. 30    
5 b. 20    
6 a. 10    
6 b. 20    
7 a. 90    
7 b. 20    


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