50 math tricks that will change your life Mentally solve the impossible in seconds

Tanya Zakowich

Book - 2023

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Subjects
Genres
Problems and exercises
Trivia and miscellanea
Instructional and educational works
Published
Essex : Page Street Publishing [2023]
Language
English
Main Author
Tanya Zakowich (author)
Item Description
Includes index.
Physical Description
208 pages : illustrations ; 23 cm
ISBN
9781645678281
  • Introduction
  • What Is a Math Trick?
  • The Magic of 0, 1, 2, 10 and 100
  • Never Forget Your Times Tables
  • 0, 2, 4, 6, 8, Repeat
  • 3 in a Row, Tic-Tac-Toe
  • Can You Draw 6 Xs?
  • 4 Layers of Bricks
  • Seesaw Between 5 and 0
  • Double Tic-Tac-Toe for 6
  • 7 in a Row, Tic-Tac-Toe
  • Fractions Over 7? Remember 142857
  • Cross the River for 8
  • What Goes Down, Must Come Up
  • Repeating Fractions Over 9
  • The 99 and 999 Sandwich
  • No Charts? No Problem!
  • Multiply 9 Using Your Fingers
  • Multiply 6 to 10 Using Your Fingers
  • 11 Comes in Pairs
  • Simple Strategies for Addition and Subtraction
  • Add Odd Number in Seconds
  • Add Even Numbers Mentally
  • Subtract Big Numbers without Borrowing
  • Subtract by Adding?!
  • Master the Art of Multiplication
  • Multiplying by 5? Do This!
  • This 11 Trick Will Blow Your Mind
  • 11 x 11? How about 11111111 x 11111111?
  • Multiply Teen Numbers in Your Sleep
  • Two Apart? Too Easy!
  • The 7-11-13 Coincidence
  • Two-Digit Multiplication Rainbows
  • Easy Three-Digit Multiplication
  • Big Numbers? Count Balloons!
  • When in Doubt, Draw a Box
  • Tired of Multiplying? Use Lines!
  • Division? No Sweat!
  • Instantly Divide by 5 (and 0.5, 50, 500)
  • Can You Divide by 25 (0.25, 2.5, 250)?
  • Divide by 1.25 (0.125, 12.5, 125) in Your Head
  • Don't Love Long Division? Try This!
  • Predict Whether a Number Is Divisible from 2 to 10
  • The Power of Percentages
  • Stuck? Reverse Your Percentages
  • Percentages Made Easy!
  • Chop Your Percentages
  • Of-Is-What Magic
  • Squares, Cubes and Roots Tricks
  • Square Numbers from 1 to 99 in Your Head
  • Become a Squaring Master (100 to 999)
  • 15 2, 25 2, 45 2, 55 2, 65 2, 75 2, 85 2, 95 2 in 3 Seconds!
  • The Trick to Cubing Numbers
  • Become a Square Root Calculating Machine!
  • Mentally Calculate Huge Roots like √6,724
  • Cube Root Magic: From 1 to 999,999
  • A Mixed Bag of Tricks
  • Which Fraction Is Bigger?
  • Myth Busted! 1 = 0.999 …
  • Investing 101: How to Double Your Money
  • Forget Doubling, Let's Triple Your Money!
  • The Time Traveler's Trick
  • How to Spot a Fake Credit Card
  • The 6174 Mystery
  • Answers
  • Acknowledgements
  • About the Author
  • Index