The difference between 51 and 18 is: 
The difference between 60 and 44 is: 
The difference between 59 and 18 is: 
The difference between 51 and 10 is: 
The difference between 51 and 18 is: 
The difference between 51 and 18 is: 
The difference between 53 and 10 is: 
The difference between 51 and 18 is: 