Addition Worksheet

Solve.

1 a. 800 + _________ = 1000
1 b. _________ + 300 = 600
2 a. _________ + 500 = 700
2 b. _________ + 400 = 900
3 a. 400 + _________ = 800
3 b. 300 + _________ = 700
4 a. _________ + 200 = 500
4 b. 900 + _________ = 1700
5 a. 1000 + _________ = 1500
5 b. 300 + _________ = 900
6 a. 0 + _________ = 600
6 b. _________ + 300 = 1300
7 a. _________ + 0 = 700
7 b. _________ + 0 = 800
8 a. 100 + _________ = 900
8 b. 300 + _________ = 1200
9 a. 800 + _________ = 1800
9 b. _________ + 400 = 1300
10 a. 800 + _________ = 1600
10 b. 800 + _________ = 1700
Page 2

Answer Key

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


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