Addition Worksheet

Solve.

1 a. 500 + _________ = 800
1 b. 400 + _________ = 1000
2 a. 400 + _________ = 800
2 b. 900 + _________ = 1100
3 a. _________ + 400 = 1000
3 b. 600 + _________ = 800
4 a. 900 + _________ = 1700
4 b. _________ + 500 = 1400
5 a. _________ + 500 = 1100
5 b. _________ + 700 = 1300
6 a. 500 + _________ = 1100
6 b. 600 + _________ = 1300
7 a. 1000 + _________ = 1100
7 b. _________ + 800 = 1600
Page 2

Answer Key

1 a. 300    
1 b. 600    
2 a. 400    
2 b. 200    
3 a. 600    
3 b. 200    
4 a. 800    
4 b. 900    
5 a. 600    
5 b. 600    
6 a. 600    
6 b. 700    
7 a. 100    
7 b. 800    


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