Addition Worksheet

Solve.

1 a. _________ + 4 + 900 = 904
 
1 b. 50 + _________ + 800 = 856
 
2 a. 2 + 0 + _________ = 902
 
2 b. 30 + 5 + _________ = 635
 
3 a. _________ + 0 + 800 = 860
 
3 b. _________ + 800 + 30 = 835
 
4 a. 600 + 70 + _________ = 673
 
4 b. 2 + _________ + 900 = 942
 
5 a. _________ + 4 + 300 = 324
 
5 b. _________ + 30 + 700 = 731
 
6 a. 40 + _________ + 200 = 243
 
6 b. 6 + _________ + 10 = 616
 
7 a. 6 + _________ + 300 = 376
 
7 b. 7 + _________ + 800 = 887
 
8 a. _________ + 70 + 300 = 373
 
8 b. 70 + 1 + _________ = 571
 
Page 2

Answer Key

1 a. 0    
1 b. 6    
2 a. 900    
2 b. 600    
3 a. 60    
3 b. 5    
4 a. 3    
4 b. 40    
5 a. 20    
5 b. 1    
6 a. 3    
6 b. 600    
7 a. 70    
7 b. 80    
8 a. 3    
8 b. 500    


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