Addition Worksheet

Solve.

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

Answer Key

1 a. 1100    
1 b. 500    
2 a. 1000    
2 b. 1100    
3 a. 900    
3 b. 1500    
4 a. 800    
4 b. 1300    
5 a. 400    
5 b. 1800    
6 a. 1300    
6 b. 1400    
7 a. 1500    
7 b. 1700    
8 a. 1400    
8 b. 900    
9 a. 600    
9 b. 700    
10 a. 1500    
10 b. 800    


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