Addition Worksheet

Solve.

1 a. 200 + _________ = 800
1 b. 700 + _________ = 800
2 a. 200 + _________ = 900
2 b. _________ + 600 = 1600
3 a. 900 + _________ = 1300
3 b. _________ + 100 = 700
4 a. _________ + 200 = 500
4 b. _________ + 1000 = 1800
5 a. _________ + 900 = 1000
5 b. _________ + 300 = 600
6 a. 400 + _________ = 500
6 b. 1000 + _________ = 1200
7 a. 900 + _________ = 1200
7 b. _________ + 100 = 400
8 a. 300 + _________ = 600
8 b. _________ + 200 = 1200
9 a. _________ + 100 = 500
9 b. 700 + _________ = 1500
10 a. _________ + 800 = 1400
10 b. 200 + _________ = 500
Page 2

Answer Key

1 a. 600    
1 b. 100    
2 a. 700    
2 b. 1000    
3 a. 400    
3 b. 600    
4 a. 300    
4 b. 800    
5 a. 100    
5 b. 300    
6 a. 100    
6 b. 200    
7 a. 300    
7 b. 300    
8 a. 300    
8 b. 1000    
9 a. 400    
9 b. 800    
10 a. 600    
10 b. 300    


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