Addition Worksheet

Solve.

1 a. _________ + 900 = 1400
1 b. _________ + 400 = 1000
2 a. _________ + 200 = 400
2 b. 500 + _________ = 600
3 a. 200 + _________ = 300
3 b. 0 + _________ = 600
4 a. _________ + 1000 = 1800
4 b. 800 + _________ = 1600
5 a. _________ + 400 = 1300
5 b. 600 + _________ = 700
6 a. _________ + 100 = 800
6 b. 200 + _________ = 1000
7 a. _________ + 200 = 300
7 b. _________ + 100 = 900
8 a. _________ + 900 = 1700
8 b. 1000 + _________ = 1200
9 a. _________ + 600 = 1600
9 b. 1000 + _________ = 1800
10 a. _________ + 900 = 900
10 b. 0 + _________ = 700
Page 2

Answer Key

1 a. 500    
1 b. 600    
2 a. 200    
2 b. 100    
3 a. 100    
3 b. 600    
4 a. 800    
4 b. 800    
5 a. 900    
5 b. 100    
6 a. 700    
6 b. 800    
7 a. 100    
7 b. 800    
8 a. 800    
8 b. 200    
9 a. 1000    
9 b. 800    
10 a. 0    
10 b. 700    


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