The difference between 80 and 64 is: 
The difference between 81 and 54 is: 
The difference between 87 and 64 is: 
The difference between 80 and 60 is: 
The difference between 90 and 64 is: 
The difference between 80 and 34 is: 
The difference between 88 and 62 is: 
The difference between 80 and 64 is: 