Addition Worksheet

Solve.

1 a. _________ + 800 = 1700
1 b. 900 + _________ = 1800
2 a. _________ + 800 = 1400
2 b. 400 + _________ = 1200
3 a. 300 + _________ = 1100
3 b. 900 + _________ = 1200
4 a. 200 + _________ = 600
4 b. 200 + _________ = 700
5 a. 1000 + _________ = 1200
5 b. 400 + _________ = 800
6 a. _________ + 900 = 1000
6 b. _________ + 800 = 1000
7 a. 1000 + _________ = 1500
7 b. 1000 + _________ = 1600
8 a. _________ + 200 = 1000
8 b. _________ + 100 = 300
9 a. _________ + 700 = 1500
9 b. 600 + _________ = 1400
10 a. 1000 + _________ = 1100
10 b. 900 + _________ = 1500
Page 2

Answer Key

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


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