The difference between 70 and 22 is: 
The difference between 78 and 71 is: 
The difference between 75 and 22 is: 
The difference between 70 and 20 is: 
The difference between 30 and 22 is: 
The difference between 70 and 42 is: 
The difference between 79 and 21 is: 
The difference between 70 and 22 is: 