The difference between 64 and 49 is: 
The difference between 98 and 58 is: 
The difference between 69 and 49 is: 
The difference between 64 and 40 is: 
The difference between 74 and 49 is: 
The difference between 64 and 59 is: 
The difference between 68 and 43 is: 
The difference between 64 and 49 is: 