The difference between 98 and 13 is: 
The difference between 64 and 34 is: 
The difference between 97 and 13 is: 
The difference between 98 and 11 is: 
The difference between 78 and 13 is: 
The difference between 98 and 53 is: 
The difference between 100 and 15 is: 
The difference between 98 and 13 is: 