The difference between 56 and 30 is: 
The difference between 68 and 35 is: 
The difference between 55 and 30 is: 
The difference between 56 and 31 is: 
The difference between 46 and 30 is: 
The difference between 56 and 20 is: 
The difference between 61 and 35 is: 
The difference between 56 and 30 is: 