The difference between 87 and 83 is: 
The difference between 89 and 63 is: 
The difference between 84 and 83 is: 
The difference between 87 and 86 is: 
The difference between 97 and 83 is: 
The difference between 87 and 13 is: 
The difference between 92 and 88 is: 
The difference between 87 and 83 is: 