The difference between 64 and 12 is: 
The difference between 65 and 47 is: 
The difference between 66 and 12 is: 
The difference between 64 and 12 is: 
The difference between 44 and 12 is: 
The difference between 64 and 52 is: 
The difference between 71 and 19 is: 
The difference between 64 and 12 is: 