The difference between 64 and 51 is: 
The difference between 80 and 45 is: 
The difference between 64 and 51 is: 
The difference between 64 and 50 is: 
The difference between 94 and 51 is: 
The difference between 64 and 51 is: 
The difference between 72 and 59 is: 
The difference between 64 and 51 is: 