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First published in 2005 by Wrightbooks, an imprint of John Wiley & Sons Australia, Ltd.

© 2005 by Bill Handley. All rights reserved

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Library of Congress Cataloging-in-Publication Data

Handley, Bill, date. Speed math for kids : the fast, fun way to do basic calculations / Bill Handley.—1st ed. p. cm. Originally published: Australia : Wrightbooks, 2005. Includes index. ISBN 978-0-7879-8863-0 (paper) 1. Mental arithmetic—Study and teaching (Elementary) I. Title. QA135.6.H36 2007 372.7—dc22 2006049171

Printed in the United States of America First Edition

10 9 8 7 6 5 4 3 2 1

iii

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

CONTENTS CONTENTS