The difference between 90 and 12 is: 
The difference between 80 and 38 is: 
The difference between 98 and 12 is: 
The difference between 90 and 10 is: 
The difference between 70 and 12 is: 
The difference between 90 and 72 is: 
The difference between 99 and 11 is: 
The difference between 90 and 12 is: 