Authors Altieri • Balka • Day • Gonsalves • Grace • Krulik Malloy • Molix-Bailey • Moseley • Mowry • Myren Price • Reynosa • Santa Cruz • Silbey • Vielhaber About the Cover Located in the Piney Woods region of Texas, Tyler is known as the Rose Capital of America. It is also home to a popular 85-foot, 6-lane, wooden slot car track. The track is designed for 1:32 and 1:24 scale cars. You will learn more about ratios in Chapter 6. About the Graphics Colored Truchet bands. Created with Mathematica. A random 2D Truchet image is constructed. The connected arcs of the image are identified and randomly colored in a band-like manner. For more information, and for programs to construct such graphics, see: www.wolfram.com/r/textbook. Copyright © 2007 by The McGraw-Hill Companies, Inc. All rights reserved. Except as permitted under the United States Copyright Act, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without prior permission of the publisher. Send all inquiries to: Glencoe/McGraw-Hill 8787 Orion Place Columbus, OH 43240-4027 ISBN-13: 978-0-02-105657-6 ISBN-10: 0-02-105657-9 Printed in the United States of America. 1 2 3 4 5 6 7 8 9 10 055/027 15 14 13 12 11 10 09 08 07 06 Start Smart Chapter 1 Place Value and Number Sense Chapter 2 Addition Chapter 3 Subtraction Chapter 4 Multiplication Concepts and Facts Chapter 5 More Multiplication Facts Chapter 6 Division Concepts and Facts Chapter 7 More Division Facts Chapter 8 Measurement: Customary System Chapter 9 Measurement: Metric System Chapter 10 Measurement and Geometry Chapter 11 Statistics: Data, Graphs, and Probability Chapter 12 Fractions Chapter 13 Fractions and Decimals Chapter 14 Multiply by One-Digit Numbers Chapter 15 Divide by One-Digit Numbers Standards Review Looking Ahead to Grade 4 iii Authors Mary Behr Altieri Putnam/Northern Westchester BOCES Yorktown Heights, New York Philip D. Gon