Addition Worksheet

Solve.

1 a. 500 + _________ = 1400
1 b. _________ + 500 = 800
2 a. 600 + _________ = 1400
2 b. 800 + _________ = 1400
3 a. _________ + 800 = 1800
3 b. 400 + _________ = 800
4 a. 100 + ______ = 100
4 b. _________ + 600 = 700
5 a. _________ + 800 = 1500
5 b. _________ + 600 = 1500
6 a. 1000 + _________ = 1900
6 b. _________ + 500 = 1300
7 a. _________ + 600 = 800
7 b. _________ + 200 = 1200
8 a. 1000 + _________ = 1100
8 b. _________ + 100 = 800
9 a. 600 + _________ = 1100
9 b. _________ + 0 = 800
10 a. _________ + 200 = 400
10 b. _________ + 900 = 1700
Page 2

Answer Key

1 a. 900    
1 b. 300    
2 a. 800    
2 b. 600    
3 a. 1000    
3 b. 400    
4 a. 0    
4 b. 100    
5 a. 700    
5 b. 900    
6 a. 900    
6 b. 800    
7 a. 200    
7 b. 1000    
8 a. 100    
8 b. 700    
9 a. 500    
9 b. 800    
10 a. 200    
10 b. 800    


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