Addition Worksheet

Solve.

1 a. 700 + _________ = 1400
1 b. _________ + 300 = 1000
2 a. 900 + _________ = 1600
2 b. _________ + 500 = 600
3 a. 600 + _________ = 1500
3 b. 700 + _________ = 1200
4 a. 200 + _________ = 900
4 b. _________ + 800 = 1200
5 a. _________ + 0 = 600
5 b. _________ + 600 = 800
6 a. 300 + _________ = 1100
6 b. ___ + 0 = 0
7 a. 500 + _________ = 800
7 b. 600 + _________ = 1300
8 a. 700 + _________ = 1700
8 b. _________ + 300 = 1300
9 a. 600 + _________ = 800
9 b. 300 + _________ = 300
10 a. 900 + _________ = 1400
10 b. 100 + _________ = 200
Page 2

Answer Key

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


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