Addition Worksheet

Solve.

1 a. 500 + _________ = 600
1 b. _________ + 300 = 600
2 a. 500 + _________ = 700
2 b. _________ + 1000 = 1300
3 a. 0 + ______ = 100
3 b. 500 + _________ = 1400
4 a. _________ + 600 = 900
4 b. _________ + 400 = 1000
5 a. 100 + _________ = 400
5 b. 300 + _________ = 800
6 a. 100 + _________ = 1000
6 b. 500 + _________ = 500
7 a. _________ + 400 = 400
7 b. 0 + _________ = 900
8 a. 400 + _________ = 1000
8 b. _________ + 800 = 1100
9 a. _________ + 100 = 900
9 b. 900 + _________ = 900
10 a. _________ + 700 = 1500
10 b. _________ + 400 = 1100
Page 2

Answer Key

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


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