The difference between 98 and 40 is: 
The difference between 78 and 24 is: 
The difference between 91 and 40 is: 
The difference between 98 and 46 is: 
The difference between 58 and 40 is: 
The difference between 98 and 20 is: 
The difference between 106 and 48 is: 
The difference between 98 and 40 is: 