Addition Worksheet

Solve.

1 a. 500 + _________ = 900
1 b. 500 + _________ = 1200
2 a. 900 + _________ = 1000
2 b. 100 + _________ = 1100
3 a. _________ + 200 = 200
3 b. 200 + _________ = 1000
4 a. 200 + _________ = 900
4 b. _________ + 800 = 800
5 a. _________ + 300 = 800
5 b. 100 + ______ = 100
6 a. _________ + 200 = 400
6 b. _________ + 600 = 1500
7 a. 500 + _________ = 1400
7 b. 0 + _________ = 200
8 a. _________ + 900 = 1700
8 b. _________ + 800 = 1600
9 a. 900 + _________ = 1600
9 b. 500 + _________ = 1100
10 a. 1000 + _________ = 1900
10 b. _________ + 1000 = 1900
Page 2

Answer Key

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


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