The difference between 99 and 66 is: 
The difference between 89 and 56 is: 
The difference between 97 and 66 is: 
The difference between 99 and 62 is: 
The difference between 99 and 66 is: 
The difference between 99 and 56 is: 
The difference between 100 and 67 is: 
The difference between 99 and 66 is: 