The difference between 63 and 16 is: 
The difference between 90 and 23 is: 
The difference between 67 and 16 is: 
The difference between 63 and 11 is: 
The difference between 73 and 16 is: 
The difference between 63 and 16 is: 
The difference between 68 and 11 is: 
The difference between 63 and 16 is: 