The difference between 78 and 68 is: 
The difference between 63 and 37 is: 
The difference between 79 and 68 is: 
The difference between 78 and 60 is: 
The difference between 98 and 68 is: 
The difference between 78 and 48 is: 
The difference between 70 and 68 is: 
The difference between 78 and 68 is: 