The difference between 73 and 23 is: 
The difference between 85 and 51 is: 
The difference between 78 and 23 is: 
The difference between 73 and 20 is: 
The difference between 43 and 23 is: 
The difference between 73 and 53 is: 
The difference between 70 and 21 is: 
The difference between 73 and 23 is: 