The difference between 68 and 20 is: 
The difference between 93 and 43 is: 
The difference between 68 and 20 is: 
The difference between 68 and 25 is: 
The difference between 78 and 20 is: 
The difference between 68 and 50 is: 
The difference between 73 and 25 is: 
The difference between 68 and 20 is: 