The difference between 72 and 64 is: 
The difference between 57 and 52 is: 
The difference between 78 and 64 is: 
The difference between 72 and 61 is: 
The difference between 92 and 64 is: 
The difference between 72 and 34 is: 
The difference between 78 and 60 is: 
The difference between 72 and 64 is: 