The difference between 48 and 28 is: 
The difference between 50 and 23 is: 
The difference between 49 and 28 is: 
The difference between 48 and 24 is: 
The difference between 98 and 28 is: 
The difference between 48 and 18 is: 
The difference between 40 and 21 is: 
The difference between 48 and 28 is: 