The difference between 63 and 55 is: 
The difference between 79 and 19 is: 
The difference between 66 and 55 is: 
The difference between 63 and 50 is: 
The difference between 63 and 55 is: 
The difference between 63 and 55 is: 
The difference between 68 and 50 is: 
The difference between 63 and 55 is: 