The difference between 26 and 13 is: 
The difference between 53 and 43 is: 
The difference between 24 and 13 is: 
The difference between 26 and 11 is: 
The difference between 26 and 13 is: 
The difference between 26 and 13 is: 
The difference between 30 and 17 is: 
The difference between 26 and 13 is: 