Addition Worksheet

Solve.

1 a. _________ + 1000 = 1800
1 b. _________ + 500 = 600
2 a. 1000 + ____________ = 2000
2 b. _________ + 100 = 1000
3 a. 400 + _________ = 900
3 b. 100 + _________ = 700
4 a. 900 + _________ = 1500
4 b. 200 + _________ = 1200
5 a. _________ + 1000 = 1500
5 b. _________ + 300 = 1100
6 a. 0 + _________ = 700
6 b. _________ + 100 = 700
7 a. 1000 + _________ = 1000
7 b. 800 + _________ = 900
8 a. 800 + _________ = 1700
8 b. 900 + _________ = 1200
9 a. 100 + _________ = 300
9 b. 100 + _________ = 900
10 a. _________ + 900 = 1800
10 b. _________ + 700 = 900
Page 2

Answer Key

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


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