The difference between 99 and 10 is: 
The difference between 46 and 24 is: 
The difference between 93 and 10 is: 
The difference between 99 and 15 is: 
The difference between 69 and 10 is: 
The difference between 99 and 20 is: 
The difference between 108 and 19 is: 
The difference between 99 and 10 is: 