The difference between 60 and 28 is: 
The difference between 81 and 74 is: 
The difference between 69 and 28 is: 
The difference between 60 and 20 is: 
The difference between 70 and 28 is: 
The difference between 60 and 58 is: 
The difference between 63 and 21 is: 
The difference between 60 and 28 is: 