The difference between 97 and 63 is: 
The difference between 56 and 26 is: 
The difference between 97 and 63 is: 
The difference between 97 and 64 is: 
The difference between 87 and 63 is: 
The difference between 97 and 23 is: 
The difference between 102 and 68 is: 
The difference between 97 and 63 is: 