The difference between 75 and 63 is: 
The difference between 81 and 70 is: 
The difference between 78 and 63 is: 
The difference between 75 and 60 is: 
The difference between 75 and 63 is: 
The difference between 75 and 23 is: 
The difference between 80 and 68 is: 
The difference between 75 and 63 is: 