A Math Trick

Stephanie sent me this neat little miracle of math. I actually scooped up the calculator and was quite impressed with the outcome. I wonder who sits around and dreams these things up?

1. Grab a calculator. (you won’t be able to do this one in your head)
2. Key in the first three digits of your phone number(NOT the area code)
3. Multiply by 80
4. Add 1
5. Multiply by 250
6. Add the last 4 digits of your phone number
7. Add the last 4 digits of your phone number again.
8. Subtract 250
9. Divide number by 2

Do you recognize the answer?

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4 Responses to A Math Trick

  1. Stephanie says:

    Cool I made the Blog!!!!!!!!!!!!
    I am excited!!!!!!

    This is a cool one they are few and far between on the net…..

    YAY!!! I made the BLOG!!!!!

    Thanks Mike..

  2. Phyd says:

    Mike! How the heck does it work? That is very good.

  3. Night Owl says:

    I have no clue Phyllis, some of it might acutally be explained because you are keying into the calculator parts of your phone number and the math you’re performing eventually takes the answer back to that form. How the process divined the Area Code is beyond me! Nifty little trick of numbers though!

  4. Juan Gonzalez says:


    I no recognize answer! Pleace explain!


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