The difference between 97 and 64 is: 
The difference between 41 and 36 is: 
The difference between 99 and 64 is: 
The difference between 97 and 65 is: 
The difference between 97 and 64 is: 
The difference between 97 and 24 is: 
The difference between 100 and 67 is: 
The difference between 97 and 64 is: 