The difference between 80 and 40 is: 
The difference between 56 and 13 is: 
The difference between 85 and 40 is: 
The difference between 80 and 40 is: 
The difference between 70 and 40 is: 
The difference between 80 and 40 is: 
The difference between 86 and 49 is: 
The difference between 80 and 40 is: 