The difference between 99 and 60 is: 
The difference between 70 and 47 is: 
The difference between 98 and 60 is: 
The difference between 99 and 64 is: 
The difference between 89 and 60 is: 
The difference between 99 and 60 is: 
The difference between 107 and 68 is: 
The difference between 99 and 60 is: 