The difference between 86 and 40 is: 
The difference between 96 and 79 is: 
The difference between 81 and 40 is: 
The difference between 86 and 45 is: 
The difference between 56 and 40 is: 
The difference between 86 and 30 is: 
The difference between 94 and 48 is: 
The difference between 86 and 40 is: 