Addition Worksheet

Solve.

1 a. _________ + 300 = 900
1 b. 1000 + _________ = 1600
2 a. _________ + 600 = 600
2 b. _________ + 300 = 1100
3 a. 800 + _________ = 1000
3 b. _________ + 800 = 900
4 a. ______ + 0 = 100
4 b. _________ + 300 = 1200
5 a. 700 + _________ = 1200
5 b. _________ + 400 = 800
6 a. _________ + 800 = 1600
6 b. 1000 + ____________ = 2000
7 a. _________ + 400 = 1200
7 b. 600 + _________ = 1400
8 a. _________ + 100 = 1000
8 b. 200 + _________ = 700
9 a. _________ + 600 = 900
9 b. 800 + _________ = 1800
10 a. _________ + 800 = 1000
10 b. _________ + 900 = 1300
Page 2

Answer Key

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


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