The difference between 99 and 55 is: 
The difference between 77 and 50 is: 
The difference between 97 and 55 is: 
The difference between 99 and 53 is: 
The difference between 79 and 55 is: 
The difference between 99 and 75 is: 
The difference between 100 and 56 is: 
The difference between 99 and 55 is: 