The difference between 48 and 20 is: 
The difference between 71 and 57 is: 
The difference between 46 and 20 is: 
The difference between 48 and 24 is: 
The difference between 38 and 20 is: 
The difference between 48 and 30 is: 
The difference between 51 and 23 is: 
The difference between 48 and 20 is: 