Rapid Math in 10 Days - The Quick-and-Easy Program for Mastering Numbers

228 Pages·1994·7.302 MB·English

by  Edward H. Julius

Digitized by the Internet Archive
in 2018 with funding from
Kahle/Austin Foundation
https://archive.org/details/rapidmathin10day0000juli
Rapid Math in 10 Days
Also Available in the Excell-erated
Skills Series from Perigee Books
RAPID MEMORY IN 7 DAYS
RAPID READING IN 5 DAYS
RAPID WRITING IN 6 DAYS
RAPID
M a t h i n
10 Days
The Quick-and-Easy Program
for Mastering Numbers
Edward H. Julius
A PERIGEE BOOK
To Merrion, Mcrrina, and Alexandra
I would like to gratefully acknowledge Dolores McMullan for hermetic
ulous and thoughtful editing of the manuscript. I would also like to thank
Steve Ross for once again believing in me.
A Perigee Book
Published by The Berkley Publishing Group
200 Madison Avenue
New York, NY 10016
Copyright© 1994 by Edward H. Julius.
Book design by Irving Perkins Associates, Inc.
Cover design by Bob Silverman, Inc.
All rights reserved. This book, or parts thereof, may not be reproduced in any form
without permission.
First Perigee edition: September 1994
Published simultaneously in Canada.
Library of Congress Cataloging-in-Publication Data
Julius, Edward H., 1952-
Rapid math in ten days : the quick-and-easy program for mastering
numbers I Edward H. Julius.-lst Perigee ed.
p. cm.
"A Perigee book."
ISBN 0-399-52129-1
1. Mental arithmetic. I. Title.
QA107.J85 1994
513.9-dc20 94-5998
CIP
Printed in the United States of America
10 9 8 7 6 5 4 3 2 1
CONTENTS
INTRODUCTION ix
Essential Math Review
Terminology and Tables
Day 1: Addition 1
Adding by Grouping and Reordering
Adding from Left to Right I
Adding from Left to Right II
Adding by Altering
Day 1 Review Quiz
Day2: Subtraction 21
Subtracting by Adding I
Subtracting by Adding II
Subtracting by Altering
Subtracting in Two Steps ·
Day 2 Review Quiz
Day3: Multiplication and Division I 37
Multiplying by 4
Dividing by 4
vi CONTENTS
Multiplying by 5
Dividing by 5
Day 3 Review Quiz
Day4: Multiplication and Division II 55
Multiplying Any Two-Digit Number by 11
Squaring Any Number Ending in 5
Multiplying by 25
Dividing by 25
Day 4 Review Quiz
Day5: Multiplication and Division III 73
Multiplying by 1.5, 2.5, 3.5, etc.
Dividing by 1.5, 2.5, 3.5, etc.
Squaring Any Number Ending in 1
Multiplying Two Numbers Whose Difference is 2
Day 5 Review Quiz
Midterm Exam 91
Day6: Multiplication and Division IV 93
Multiplying by 15
Multiplying Two Numbers Just Over 100
Multiplying by 75
Dividing by 75
Day 6 Review Quiz
Day7: Multiplication and Division V 113
Multiplying by 9
Multiplying by 12
Multiplying by 125
CONTENTS vil
Dividing by 125
Day 7 Review Quiz
Day 8: Multiplication and Division VI 131
Dividing by 15
Squaring Any Two-Digit Number Beginning in 5
Multiplying by Regrouping
Multiplying by Augmenting
Day 8 Review Quiz
Day 9: Estimation I 149
Estimating Multiplication by 33 or 34
Estimating Division by 33 or 34
Estimating Multiplication by 49 or 51
Estimating Division by 49 or 51
Day 9 Review Quiz
Day 10: Estimation II 167
Estimating Multiplication by 66 or 67
Estimating Division by 66 or 67
Estimating Division by 9
Estimating Division by 11
Day 10 Review Quiz
Final Exam 184
Conclusion 187
Answers to Practice Exercises and Exams 189
Summary of the 40 Excell-erated
math techniques 204
Throughout the book, a number of "Number Curiosities," tips, and anecdotes are
provided for your enlightenment and enjoyment.