The difference between 63 and 30 is: 
The difference between 20 and 12 is: 
The difference between 62 and 30 is: 
The difference between 63 and 32 is: 
The difference between 93 and 30 is: 
The difference between 63 and 40 is: 
The difference between 71 and 38 is: 
The difference between 63 and 30 is: 