The difference between 64 and 23 is: 
The difference between 70 and 69 is: 
The difference between 65 and 23 is: 
The difference between 64 and 20 is: 
The difference between 84 and 23 is: 
The difference between 64 and 23 is: 
The difference between 70 and 29 is: 
The difference between 64 and 23 is: 