Addition Worksheet

Solve.

1 a. 60 + 40 + 50 + ______ = 220
 
1 b. 60 + 40 + ______ + 10 = 160
 
2 a. 50 + 40 + ______ + 20 = 180
 
2 b. 10 + 10 + 20 + ______ = 110
 
3 a. ______ + 70 + 50 + 40 = 240
 
3 b. 70 + 70 + 40 + ______ = 200
 
4 a. 30 + 40 + ______ + 30 = 190
 
4 b. ______ + 30 + 30 + 80 = 150
 
5 a. 70 + 40 + ______ + 50 = 240
 
5 b. 80 + ______ + 30 + 40 = 240
 
6 a. ______ + 20 + 80 + 20 = 130
 
6 b. 20 + 50 + ______ + 60 = 170
 
7 a. 60 + 80 + ______ + 80 = 280
 
7 b. 40 + 50 + ______ + 90 = 240
 
8 a. 10 + ______ + 60 + 40 = 160
 
8 b. _________ + 60 + 70 + 50 = 250
 
Page 2

Answer Key

1 a. 70    
1 b. 50    
2 a. 70    
2 b. 70    
3 a. 80    
3 b. 20    
4 a. 90    
4 b. 10    
5 a. 80    
5 b. 90    
6 a. 10    
6 b. 40    
7 a. 60    
7 b. 60    
8 a. 50    
8 b. 70    

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