The difference between 64 and 55 is: 
The difference between 75 and 70 is: 
The difference between 69 and 55 is: 
The difference between 64 and 52 is: 
The difference between 64 and 55 is: 
The difference between 64 and 45 is: 
The difference between 69 and 50 is: 
The difference between 64 and 55 is: 