Addition Worksheet

Solve.

1 a. _________ + 500 = 1200
1 b. _________ + 500 = 1100
2 a. _________ + 900 = 1600
2 b. _________ + 100 = 900
3 a. _________ + 700 = 700
3 b. 300 + _________ = 700
4 a. _________ + 400 = 500
4 b. 700 + _________ = 800
5 a. 1000 + _________ = 1200
5 b. _________ + 300 = 500
6 a. 200 + _________ = 800
6 b. 600 + _________ = 700
7 a. _________ + 1000 = 1300
7 b. 800 + _________ = 1600
8 a. 800 + _________ = 900
8 b. 700 + _________ = 1200
9 a. _________ + 400 = 1200
9 b. 200 + _________ = 400
10 a. 700 + _________ = 700
10 b. _________ + 500 = 1400
Page 2

Answer Key

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


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