The difference between 53 and 52 is: 
The difference between 81 and 63 is: 
The difference between 56 and 52 is: 
The difference between 53 and 51 is: 
The difference between 63 and 52 is: 
The difference between 53 and 22 is: 
The difference between 60 and 59 is: 
The difference between 53 and 52 is: 