The difference between 91 and 38 is: 
The difference between 82 and 36 is: 
The difference between 99 and 38 is: 
The difference between 91 and 30 is: 
The difference between 71 and 38 is: 
The difference between 91 and 88 is: 
The difference between 99 and 36 is: 
The difference between 91 and 38 is: 