Addition Worksheet

Solve.

1 a. 900 + _________ = 1200
1 b. _________ + 500 = 1000
2 a. 700 + _________ = 900
2 b. _________ + 200 = 1200
3 a. 900 + _________ = 1600
3 b. 600 + _________ = 1000
4 a. _________ + 900 = 900
4 b. 200 + _________ = 500
5 a. 100 + _________ = 1000
5 b. _________ + 100 = 1000
6 a. 300 + _________ = 800
6 b. _________ + 500 = 700
7 a. 600 + _________ = 1500
7 b. _________ + 200 = 300
8 a. ____________ + 1000 = 2000
8 b. _________ + 400 = 1100
9 a. _________ + 0 = 500
9 b. 500 + _________ = 1000
10 a. 800 + _________ = 900
10 b. 300 + _________ = 900
Page 2

Answer Key

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


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