The difference between 72 and 42 is: 
The difference between 86 and 56 is: 
The difference between 75 and 42 is: 
The difference between 72 and 41 is: 
The difference between 52 and 42 is: 
The difference between 72 and 22 is: 
The difference between 70 and 43 is: 
The difference between 72 and 42 is: 