Speed Mathematics Secrets Skills for Quick Calculation

by Handley, Bill

• ISBN13: 9780471467311
• ISBN10: 0471467316
• Edition: 1st
• Format: Paperback
• Copyright: 2003-10-20
• Publisher: Wiley

Summary

Using this book will improve your understanding of math and have you performing like a genius! People who excel at mathematics use better strategies than the rest of us; they are not necessarily more intelligent. Speed Mathematics teaches simple methods that will enable you to make lightning calculations in your head-including multiplication, division, addition, and subtraction, as well as working with fractions, squaring numbers, and extracting square and cube roots. Here's just one example of this revolutionary approach to basic mathematics: 96 x 97 = Subtract each number from 100. 96 x 97 = 4 3 Subtract diagonally. Either 96--3 or 97-- 4. The result is the first part of the answer. 96 x 97 = 93 4 3 Multiply the numbers in the circles. 4 x 3 = 12. This is the second part of the answer. 96 x 97 = 9312 4 3 It's that easy!

Author Biography

<b>BILL HANDLEY</b> is recognized as an authority on teaching and study methods. His methods of teaching mathematics and his strategies for learning and thinking have achieved astonishing results in schools worldwide.

Table of Contents

Preface	p. vii
Introduction	p. ix
Multiplication	p. 1
Using a Reference Number	p. 6
Multiplying Numbers Above and Below the Reference Number	p. 14
Checking Answers: Part One	p. 18
Multiplication: Part Two	p. 25
Multiplying Decimals	p. 41
Multiplying Using Two Reference Numbers	p. 47
Addition	p. 59
Subtraction	p. 66
Squaring Numbers	p. 75
Short Division	p. 87
Long Division by Factors	p. 92
Standard Long Division	p. 98
Direct Division	p. 104
Division by Addition	p. 115
Checking Answers: Part Two	p. 133
Estimating Square Roots	p. 139
Calculating Square Roots	p. 149
Fun Shortcuts	p. 160
Adding and Subtracting Fractions	p. 178
Multiplying and Dividing Fractions	p. 184
Direct Multiplication	p. 190
Estimating Answers	p. 197
Using What You Have Learned	p. 201
Afterword	p. 209
Frequently Asked Questions	p. 211
Estimating Cube Roots	p. 217
Checks for Divisibility	p. 224
Why Our Methods Work	p. 233
Casting Out Nines--Why It Works	p. 239
Squaring Feet and Inches	p. 241
How Do You Get Students to Enjoy Mathematics?	p. 244
Solving Problems	p. 248
Glossary	p. 250
Index	p. 253
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