Addition Worksheet

Solve.

1 a. 300 + _________ = 1100
1 b. ______ + 0 = 100
2 a. _________ + 100 = 800
2 b. 800 + _________ = 1000
3 a. 400 + _________ = 900
3 b. 800 + _________ = 1300
4 a. _________ + 900 = 1800
4 b. 1000 + _________ = 1600
5 a. _________ + 400 = 1200
5 b. _________ + 0 = 500
6 a. _________ + 900 = 1600
6 b. 100 + _________ = 700
7 a. _________ + 1000 = 1700
7 b. _________ + 800 = 1800
8 a. _________ + 1000 = 1800
8 b. _________ + 200 = 600
9 a. 100 + _________ = 200
9 b. _________ + 600 = 900
10 a. 800 + _________ = 1700
10 b. 400 + _________ = 400
Page 2

Answer Key

1 a. 800    
1 b. 100    
2 a. 700    
2 b. 200    
3 a. 500    
3 b. 500    
4 a. 900    
4 b. 600    
5 a. 800    
5 b. 500    
6 a. 700    
6 b. 600    
7 a. 700    
7 b. 1000    
8 a. 800    
8 b. 400    
9 a. 100    
9 b. 300    
10 a. 900    
10 b. 0    


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