The difference between 84 and 20 is: 
The difference between 57 and 44 is: 
The difference between 81 and 20 is: 
The difference between 84 and 20 is: 
The difference between 34 and 20 is: 
The difference between 84 and 70 is: 
The difference between 92 and 28 is: 
The difference between 84 and 20 is: 