The difference between 71 and 31 is: 
The difference between 65 and 54 is: 
The difference between 79 and 31 is: 
The difference between 71 and 30 is: 
The difference between 51 and 31 is: 
The difference between 71 and 41 is: 
The difference between 73 and 34 is: 
The difference between 71 and 31 is: 