Free Puzzles - They'll stump you! Illustration

Puzzles & Brain Games

Math Puzzle

Here is a math trick so unbelievable
that it will stump you!

  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 by 2

Do you recognize the answer?

(This clever math puzzle was sent to Mr Donn by another teacher at Lakes HS, Mrs Manderville.)

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