1001 MATH PROBLEMS
2ND EDITION

1001 MATH PROBLEMS
2ND EDITION

®

NEW

YORK

Copyright © 2004 LearningExpress, LLC. All rights reserved under International and Pan-American Copyright Conventions. Published in the United States by LearningExpress, LLC, New York. Library of Congress Cataloging-in-Publication Data: 1001 math problems.—2nd ed. p. cm. Includes index. ISBN 1-57685-512-0 (pbk.: alk. paper) 1. Mathematics—Problems, exercises, etc. QA43.A12 2004 510' .76—dc22 2003027069 Printed in the United States of America 9 8 7 6 5 4 3 2 1 Second Edition ISBN 1-57685-512-0 For more information or to place an order, contact LearningExpress at: 55 Broadway 8th Floor New York, NY 10006 Or visit us at: www.learnatest.com

Contents
INTRODUCTION SECTION 1 SECTION 2 SECTION 3 SECTION 4 SECTION 5 SECTION 6 ANSWERS Miscellaneous Math Fractions Decimals Percentages Algebra Geometry vii 1 25 47 71 95 123 157

v

Introduction
This book—which can be used alone, in combination with the LearningExpress publication, Practical Math Success in 20 Minutes a Day, or along with another basic math text of your choice—will give you practice in dealing with whole numbers, fractions, decimals, percentages, basic algebra, and basic geometry. It is designed for individuals working on their own, and for teachers or tutors helping students learn the basics. Practice on 1001 math problems should help alleviate math anxiety, too!

A

re you frightened of mathematics? You’re not alone. By the time I was nine, I had developed a full-blown phobia. In fact, my most horrible moments in grade school took place right before an arithmetic test. My terror—and avoidance—lasted well into adulthood, until the day I landed a job with a social service agency and was given the task of ﬁguring budgets, which involved knowing how to do percentages. I might just as well have been asked to decipher the strange squiggles incised on the nose-cone of an alien spaceship. I decided I’d better... [continues]

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