Number Tricks


The Digit Struck Out
The Digit Struck Out (Interactive)

Lewis Carroll's Number Trick
MacArthur's Favorite Number Game(2)

The 99 Trick
The 999 Trick

The 1979 Trick
The 17 Trick

Number Trick #1
Number Trick #2

Number Trick #3
Number Trick #4

Interactive version of Number Trick #4
Some Number Tricks

Domino Trick
Domino Trick (Interactive version)

Overhead Projector Trick
Interactive Overhead Trick

Squaring Numbers Ending in Five
Base 2 Trick

Calendar Trick #1
Calendar Trick #2

Interactive ver. of Calendar Trick #1
Interactive ver. of Calendar Trick #2

The Printing Press Number
Birthday Trick (European format)

Quick Addition
Addition Trick with Whole Numbers

Addition Trick
Addition Trick with Negative Numbers

Subtraction Trick
Subtraction Trick (Interactive version)

Multiplication Trick
Division Trick

Perfect Fifth Power Trick
The Dime and Penny Trick

My Nines Tables
Repeat Yourself

Six Consecutive Numbers Trick
The Lucky Numbers Trick

Fibonacci Trick
Mathemagical Black Holes

Brothers and Sisters Trick
Four Digit Number Trick



Send any comments or questions to: David Pleacher