Addition Worksheet

Solve.

1 a. 9 + 30 + _________ = 639
 
1 b. 500 + _________ + 5 = 535
 
2 a. ______ + 0 + 100 = 120
 
2 b. 6 + _________ + 400 = 476
 
3 a. 9 + _________ + 500 = 589
 
3 b. 2 + 40 + _________ = 642
 
4 a. _________ + 600 + 90 = 692
 
4 b. _________ + 80 + 8 = 688
 
5 a. 30 + _________ + 300 = 335
 
5 b. _________ + 90 + 300 = 390
 
6 a. _________ + 6 + 900 = 906
 
6 b. _________ + 600 + 0 = 600
 
7 a. 0 + 7 + _________ = 507
 
7 b. _________ + 0 + 200 = 200
 
8 a. _________ + 50 + 700 = 750
 
8 b. _________ + 800 + 60 = 868
 
Page 2

Answer Key

1 a. 600    
1 b. 30    
2 a. 20    
2 b. 70    
3 a. 80    
3 b. 600    
4 a. 2    
4 b. 600    
5 a. 5    
5 b. 0    
6 a. 0    
6 b. 0    
7 a. 500    
7 b. 0    
8 a. 0    
8 b. 8    


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