The difference between 54 and 45 is: 
The difference between 34 and 10 is: 
The difference between 57 and 45 is: 
The difference between 54 and 40 is: 
The difference between 64 and 45 is: 
The difference between 54 and 15 is: 
The difference between 59 and 40 is: 
The difference between 54 and 45 is: 