The difference between 54 and 52 is: 
The difference between 51 and 14 is: 
The difference between 53 and 52 is: 
The difference between 54 and 50 is: 
The difference between 64 and 52 is: 
The difference between 54 and 42 is: 
The difference between 61 and 59 is: 
The difference between 54 and 52 is: 