Addition Worksheet

Solve.

1 a. 9 + 500 + _________ = 599
1 b. 9 + 40 + _________ = 449
2 a. _________ + 90 + 6 = 296
2 b. 900 + 50 + _________ = 952
3 a. _________ + 900 + 60 = 964
3 b. 4 + 50 + _________ = 854
4 a. 8 + _________ + 0 = 808
4 b. 7 + _________ + 800 = 857
5 a. 70 + _________ + 800 = 870
5 b. 6 + 600 + _________ = 636
6 a. 4 + _________ + 300 = 314
6 b. 200 + _________ + 2 = 272
7 a. 4 + 80 + _________ = 984
7 b. 20 + _________ + 500 = 522
Page 2

Answer Key

1 a. 90    
1 b. 400    
2 a. 200    
2 b. 2    
3 a. 4    
3 b. 800    
4 a. 800    
4 b. 50    
5 a. 0    
5 b. 30    
6 a. 10    
6 b. 70    
7 a. 900    
7 b. 2    


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