Addition Worksheet

Solve.

1 a. _________ + 900 = 1900
1 b. _________ + 400 = 1100
2 a. 900 + _________ = 1200
2 b. _________ + 800 = 900
3 a. _________ + 200 = 800
3 b. _________ + 600 = 1100
4 a. _________ + 700 = 1200
4 b. _________ + 200 = 700
5 a. _________ + 800 = 1400
5 b. _________ + 600 = 1300
6 a. 600 + _________ = 1200
6 b. 200 + _________ = 700
7 a. 600 + _________ = 900
7 b. _________ + 0 = 600
Page 2

Answer Key

1 a. 1000    
1 b. 700    
2 a. 300    
2 b. 100    
3 a. 600    
3 b. 500    
4 a. 500    
4 b. 500    
5 a. 600    
5 b. 700    
6 a. 600    
6 b. 500    
7 a. 300    
7 b. 600    


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