Addition Worksheet

Solve.

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

Answer Key

1 a. 900    
1 b. 400    
2 a. 100    
2 b. 600    
3 a. 100    
3 b. 500    
4 a. 500    
4 b. 100    
5 a. 900    
5 b. 200    
6 a. 700    
6 b. 500    
7 a. 1000    
7 b. 1000    


Copying permission: You are free to copy this worksheet to any number of students for their mathematics work. Do not distribute on websites, books, or any such material without permission. Copyright www.HomeschoolMath.net