Math Tricks Page

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Number and Computational Tricks
Judge Handley Mindreading Trick

General MacArthur's Favorite Number Game
Wrecked Angle -- Extra Square Inch

Abbott and Costello's trick: 7x13=28
Mobius Strip

Phone Number Trick
The Dictionary Trick

100 Pennies Trick
Tearing Paper in Half

Your Age by Eating Out
Pepper Problem (the missing dollar)

Snapping Your Fingers
Twenty Objects Trick

What's Your Favorite Class?
Guess a Birthday

Cow Problem
Money is Irrational

Best Year of Your Life
April Fool's Trick

Presidential Prediction!
Invisible Dice

How Smart is your Right Foot?
Quadratic Expression Trick

What's Your Wife's Name?
Card Tricks
One of Einstein's Favorite Puzzles

Interactive version of MacArthur's Trick
Math Magic Tricks by Martin Gardner

Finger Multiplication
Mobius Card -- An Impossible Shape!

Mathemagical Black Holes
The Hole in the Paper Trick

Toilet Paper Tube Tricks by Martin Gardner
Salary Problem

Your Age by Chocolate
The Bellman Problem (the missing dollar)

Psychological Forces
Interactive version of Twenty Objects

Optical Illusions
Interactive version of Guess A Birthday

Roman Numeral Trick
Guess the Month

Favorite Role Model
2011 Trick

The Vanishing Man
the $3.41 Challenge -- Bar Bet

Balancing Nails
Who Picked the Pencil?

Send comments to: David Pleacher