The difference between 71 and 57 is: 
The difference between 53 and 52 is: 
The difference between 78 and 57 is: 
The difference between 71 and 50 is: 
The difference between 61 and 57 is: 
The difference between 71 and 37 is: 
The difference between 79 and 55 is: 
The difference between 71 and 57 is: 