The difference between 99 and 54 is: 
The difference between 96 and 39 is: 
The difference between 99 and 54 is: 
The difference between 99 and 58 is: 
The difference between 99 and 54 is: 
The difference between 99 and 54 is: 
The difference between 100 and 55 is: 
The difference between 99 and 54 is: 