Addition Worksheet

Solve.

1 a. 300 + _________ = 700
1 b. _________ + 0 = 900
2 a. 800 + _________ = 1000
2 b. 100 + _________ = 1000
3 a. 400 + _________ = 700
3 b. 100 + _________ = 900
4 a. 0 + _________ = 300
4 b. _________ + 0 = 400
5 a. 300 + _________ = 600
5 b. 700 + _________ = 900
6 a. 600 + _________ = 1100
6 b. _________ + 700 = 1400
7 a. _________ + 1000 = 1200
7 b. 400 + _________ = 800
Page 2

Answer Key

1 a. 400    
1 b. 900    
2 a. 200    
2 b. 900    
3 a. 300    
3 b. 800    
4 a. 300    
4 b. 400    
5 a. 300    
5 b. 200    
6 a. 500    
6 b. 700    
7 a. 200    
7 b. 400    


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