The difference between 71 and 55 is: 
The difference between 73 and 41 is: 
The difference between 79 and 55 is: 
The difference between 71 and 50 is: 
The difference between 61 and 55 is: 
The difference between 71 and 45 is: 
The difference between 79 and 53 is: 
The difference between 71 and 55 is: 