Addition Worksheet

Solve.

1 a. 200 + _________ = 900
1 b. 800 + _________ = 1800
2 a. 700 + _________ = 900
2 b. _________ + 500 = 1000
3 a. _________ + 100 = 500
3 b. 300 + _________ = 400
4 a. _________ + 200 = 1100
4 b. _________ + 100 = 600
5 a. 700 + _________ = 1200
5 b. 700 + _________ = 1000
6 a. _________ + 400 = 1300
6 b. _________ + 1000 = 1100
7 a. _________ + 700 = 1200
7 b. 900 + _________ = 1300
8 a. 1000 + _________ = 1800
8 b. _________ + 0 = 800
9 a. _________ + 600 = 1200
9 b. 0 + _________ = 200
10 a. _________ + 800 = 1200
10 b. 500 + _________ = 1500
Page 2

Answer Key

1 a. 700    
1 b. 1000    
2 a. 200    
2 b. 500    
3 a. 400    
3 b. 100    
4 a. 900    
4 b. 500    
5 a. 500    
5 b. 300    
6 a. 900    
6 b. 100    
7 a. 500    
7 b. 400    
8 a. 800    
8 b. 800    
9 a. 600    
9 b. 200    
10 a. 400    
10 b. 1000    


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