The difference between 63 and 51 is: 
The difference between 59 and 39 is: 
The difference between 67 and 51 is: 
The difference between 63 and 52 is: 
The difference between 63 and 51 is: 
The difference between 63 and 41 is: 
The difference between 70 and 58 is: 
The difference between 63 and 51 is: 