Number Trick

1. Think of your age (or any number greater than 9).

2. Multiply by 10.

3. Now pick a number less than or equal to 9.

4. Multiply it by 9.

5. Subtract the two results (step 2 and step 4).

Enter your total here:

 
 
 

Many thanks to Jaime Garcia Ramirez for helping me with the javascript!

 

Click here to run again