The difference between 60 and 42 is: 
The difference between 77 and 69 is: 
The difference between 68 and 42 is: 
The difference between 60 and 40 is: 
The difference between 50 and 42 is: 
The difference between 60 and 52 is: 
The difference between 69 and 41 is: 
The difference between 60 and 42 is: 