Addition Worksheet

Solve.

1 a. 400 + _________ = 1400
1 b. 100 + _________ = 400
2 a. _________ + 200 = 700
2 b. 100 + ______ = 100
3 a. 600 + _________ = 1600
3 b. 900 + _________ = 1200
4 a. _________ + 500 = 1400
4 b. _________ + 1000 = 1800
5 a. ____________ + 1000 = 2000
5 b. 600 + _________ = 1500
6 a. 500 + _________ = 700
6 b. 500 + _________ = 900
7 a. _________ + 600 = 900
7 b. 700 + _________ = 1000
8 a. _________ + 800 = 1700
8 b. _________ + 0 = 200
9 a. 200 + _________ = 1200
9 b. _________ + 200 = 1000
10 a. 500 + _________ = 1200
10 b. _________ + 1000 = 1900
Page 2

Answer Key

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


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