The difference between 61 and 35 is: 
The difference between 69 and 40 is: 
The difference between 67 and 35 is: 
The difference between 61 and 30 is: 
The difference between 81 and 35 is: 
The difference between 61 and 55 is: 
The difference between 66 and 30 is: 
The difference between 61 and 35 is: 