The difference between 57 and 30 is: 
The difference between 74 and 38 is: 
The difference between 58 and 30 is: 
The difference between 57 and 36 is: 
The difference between 97 and 30 is: 
The difference between 57 and 20 is: 
The difference between 61 and 34 is: 
The difference between 57 and 30 is: 