The difference between 60 and 52 is: 
The difference between 90 and 66 is: 
The difference between 63 and 52 is: 
The difference between 60 and 50 is: 
The difference between 90 and 52 is: 
The difference between 60 and 22 is: 
The difference between 69 and 51 is: 
The difference between 60 and 52 is: 