The difference between 90 and 63 is: 
The difference between 50 and 44 is: 
The difference between 98 and 63 is: 
The difference between 90 and 60 is: 
The difference between 70 and 63 is: 
The difference between 90 and 23 is: 
The difference between 98 and 61 is: 
The difference between 90 and 63 is: 