Addition Worksheet

Solve.

1 a. 500 + _________ = 700
1 b. 300 + _________ = 500
2 a. 200 + _________ = 800
2 b. _________ + 400 = 1400
3 a. 600 + _________ = 1300
3 b. 100 + _________ = 300
4 a. 600 + _________ = 700
4 b. _________ + 100 = 300
5 a. 1000 + _________ = 1400
5 b. _________ + 300 = 1000
6 a. _________ + 700 = 1300
6 b. 1000 + _________ = 1900
7 a. 100 + _________ = 1100
7 b. _________ + 900 = 1500
8 a. 200 + _________ = 600
8 b. 300 + _________ = 300
9 a. 1000 + ____________ = 2000
9 b. 400 + _________ = 1100
10 a. _________ + 300 = 500
10 b. _________ + 300 = 300
Page 2

Answer Key

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


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