The difference between 70 and 30 is: 
The difference between 50 and 23 is: 
The difference between 72 and 30 is: 
The difference between 70 and 30 is: 
The difference between 50 and 30 is: 
The difference between 70 and 20 is: 
The difference between 72 and 34 is: 
The difference between 70 and 30 is: 