Addition Worksheet

Solve.

1 a. 3 + _________ + 50 = 553
 
1 b. 9 + 50 + ______ = 159
 
2 a. 10 + _________ + 100 = 118
 
2 b. 9 + 30 + _________ = 239
 
3 a. 6 + _________ + 100 = 196
 
3 b. 60 + _________ + 900 = 961
 
4 a. _________ + 30 + 800 = 830
 
4 b. 60 + _________ + 300 = 368
 
5 a. _________ + 5 + 300 = 325
 
5 b. 6 + 60 + _________ = 366
 
6 a. 100 + ______ + 4 = 144
 
6 b. _________ + 20 + 800 = 820
 
7 a. _________ + 60 + 400 = 467
 
7 b. _________ + 30 + 600 = 630
 
8 a. _________ + 300 + 80 = 385
 
8 b. 5 + 50 + _________ = 855
 
Page 2

Answer Key

1 a. 500    
1 b. 100    
2 a. 8    
2 b. 200    
3 a. 90    
3 b. 1    
4 a. 0    
4 b. 8    
5 a. 20    
5 b. 300    
6 a. 40    
6 b. 0    
7 a. 7    
7 b. 0    
8 a. 5    
8 b. 800    


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