Addition Worksheet

Solve.

1 a. _________ + 300 = 400
 
1 b. _________ + 1000 = 1400
 
2 a. 0 + _________ = 700
 
2 b. _________ + 600 = 1300
 
3 a. _________ + 800 = 1600
 
3 b. 0 + _________ = 500
 
4 a. _________ + 700 = 1000
 
4 b. _________ + 900 = 1000
 
5 a. _________ + 1000 = 1800
 
5 b. 1000 + _________ = 1400
 
6 a. 800 + _________ = 900
 
6 b. 100 + _________ = 700
 
7 a. 700 + _________ = 900
 
7 b. ______ + 100 = 100
 
8 a. 500 + _________ = 800
 
8 b. _________ + 300 = 600
 
Page 2

Answer Key

1 a. 100    
1 b. 400    
2 a. 700    
2 b. 700    
3 a. 800    
3 b. 500    
4 a. 300    
4 b. 100    
5 a. 800    
5 b. 400    
6 a. 100    
6 b. 600    
7 a. 200    
7 b. 0    
8 a. 300    
8 b. 300    


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