The difference between 68 and 12 is: 
The difference between 99 and 24 is: 
The difference between 63 and 12 is: 
The difference between 68 and 17 is: 
The difference between 38 and 12 is: 
The difference between 68 and 32 is: 
The difference between 70 and 14 is: 
The difference between 68 and 12 is: 