Addition Worksheet

Solve.

1 a. _________ + 1000 = 1400
1 b. _________ + 300 = 1300
2 a. 400 + _________ = 1100
2 b. 400 + _________ = 400
3 a. 600 + _________ = 1400
3 b. _________ + 400 = 800
4 a. _________ + 1000 = 1800
4 b. 500 + _________ = 900
5 a. 800 + _________ = 1700
5 b. ______ + 0 = 100
6 a. 700 + _________ = 1600
6 b. 700 + _________ = 1500
7 a. _________ + 300 = 1000
7 b. 1000 + ____________ = 2000
8 a. 0 + _________ = 400
8 b. 300 + _________ = 1300
9 a. 800 + _________ = 1600
9 b. 100 + _________ = 500
10 a. 200 + _________ = 400
10 b. 400 + _________ = 600
Page 2

Answer Key

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


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