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Speed Math for Kids

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作者
Bill Handley
出版社
John Wiley
ISBN
9780787988630
出版日期
2007/03

簡介

Learn how to easily do quick mental math calculations Speed Math for Kids is your guide to becoming a math genius--even if you have struggled with math in the past. Believe it or not, you have the ability to perform lightning quick calculations that will astonish your friends, family, and teachers. You'll be able to master your multiplication tables in minutes, and learn basic number facts while doing it. While the other kids in class are still writing down the problems, you can be calling out the answers. Speed Math for Kids is all about playing with mathematics. This fun-filled book will teach you: How to multiply and divide large numbers in your head What you can do to make addition and subtraction easy Tricks for understanding fractions and decimals How to quickly check answers every time you make a calculation And much more If you're looking for a foolproof way to do multiplication, division, factoring estimating, and more, Speed Math for Kids is the book for you. With enough practice you'll go straight to the top of the class!

目錄

Preface v Introduction 1 1 Multiplication: Getting Started 4 2 Using a Reference Number 13 3 Numbers Above the Reference Number 21 4 Multiplying Above & Below the Reference Number 29 5 Checking Your Answers 34 6 Multiplication Using Any Reference Number 43 7 Multiplying Lower Numbers 59 8 Multiplication by 11 69 9 Multiplying Decimals 77 10 Multiplication Using Two Reference Numbers 87 11 Addition 106 12 Subtraction 116 13 Simple Division 130 14 Long Division by Factors 141 15 Standard Long Division Made Easy 149 16 Direct Long Division 157 17 Checking Answers (Division) 166 18 Fractions Made Easy 173 19 Direct Multiplication 185 20 Putting It All into Practice 195 Afterword 199 Appendix A Using the Methods in the Classroom 203 Appendix B Working Th rough a Problem 207 Appendix C Learn the 13, 14 and 15 Times Tables 209 Appendix D Tests for Divisibility 211 Appendix E Keeping Count 215 Appendix F Plus and Minus Numbers 217 Appendix G Percentages 219 Appendix H Hints for Learning 223 Appendix I Estimating 225 Appendix J Squaring Numbers Ending in 5 227 Appendix K Practice Sheets 231 Index 239

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