Addition Worksheet

Solve.

1 a. 30 + 10 + 50 + ______ = 120
 
1 b. ______ + 20 + 50 + 40 = 160
 
2 a. 70 + ______ + 60 + 20 = 230
 
2 b. 30 + 80 + 60 + ______ = 220
 
3 a. ______ + 20 + 20 + 90 = 150
 
3 b. 90 + 30 + 50 + _________ = 260
 
4 a. ______ + 60 + 30 + 10 = 150
 
4 b. ______ + 40 + 30 + 60 = 170
 
5 a. 50 + 60 + ______ + 80 = 200
 
5 b. 30 + 70 + 80 + _________ = 270
 
6 a. 90 + 10 + 70 + ______ = 200
 
6 b. ______ + 50 + 70 + 60 = 220
 
7 a. ______ + 20 + 50 + 60 = 210
 
7 b. 80 + _________ + 40 + 90 = 300
 
8 a. 70 + 60 + ______ + 40 = 180
 
8 b. 80 + 40 + ______ + 10 = 210
 
Page 2

Answer Key

1 a. 30    
1 b. 50    
2 a. 80    
2 b. 50    
3 a. 20    
3 b. 90    
4 a. 50    
4 b. 40    
5 a. 10    
5 b. 90    
6 a. 30    
6 b. 40    
7 a. 80    
7 b. 90    
8 a. 10    
8 b. 80    

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