Addition Worksheet

Solve.

1 a. 600 + _________ = 1000
1 b. 700 + _________ = 1700
2 a. 500 + _________ = 1400
2 b. 1000 + _________ = 1100
3 a. 700 + _________ = 1500
3 b. 300 + _________ = 700
4 a. _________ + 300 = 900
4 b. _________ + 1000 = 1900
5 a. 100 + _________ = 900
5 b. _________ + 100 = 200
6 a. _________ + 600 = 900
6 b. _________ + 400 = 1200
7 a. 400 + _________ = 900
7 b. _________ + 100 = 500
8 a. 500 + _________ = 1300
8 b. 900 + _________ = 1200
9 a. _________ + 300 = 700
9 b. 200 + _________ = 200
10 a. _________ + 200 = 1000
10 b. 100 + _________ = 500
Page 2

Answer Key

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


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