Math Word Problems

1 501 Math Word Problems7305_501 MathWordProblems_CS4_[FIN_MT].indd 19/10/12 3:47 PM7305_501 MathWordProblems_CS4_[FIN_MT].indd 29/10/12 3:47 PMMath Word Problems501N eW Y o r k 3rd editionMark A. McKibben7305_501 MathWordProblems_CS4_[FIN_MT].indd 39/10/12 3:47 PMCopyright 2012 LearningExpress, rights reserved under International and Pan-American Copyright in the United States by LearningExpress, LLC, New of Congress Cataloging-in-Publication Data: TKPrinted in the United States of America9 8 7 6 5 4 3 2 1 Third EditionISBN 978-1-57685-904-9 For more information or to place an order, contact LearningExpress at:2 Rector Street26th FloorNew York, NY 10006Or visit us [FIN_MT].

2 Indd 49/10/12 3:47 PM Introduction vii 1 Miscellaneous Math 1 Answer explanations 15 2 Fractions 23 Answer explanations 39 3 Decimals 49 Answer explanations 63 4 Percents 73 Answer explanations 88 5 Algebra 99 Answer explanations 127 6 Geometry 156 Answer explanations 196 Additional online Practice 227 Contents7305_501 MathWordProblems_CS4_[FIN_MT].indd 59/10/12 3:47 PM7305_501 MathWordProblems_CS4_[FIN_MT].indd 69/10/12 3:47 PMWelcome to 501 Math Word Problems ! This book is designed to provide you with review and practice for math success.

3 It provides 501 Problems so you can flex your muscles with a variety of mathematical concepts. 501 Math Word Problems is designed for many audiences. It is for anyone who has ever taken a math course and needs to refresh and revive forgotten skills. It can be used to supplement current instruction in a math class. Or, it can be used by teachers and tutors who need to reinforce student skills. If at some point you feel you need further explanation about some of the more advanced math topics highlighted in this book, you can find them in other LearningExpress publications.

4 Algebra Success in 20 Minutes a Day, 501 Algebra Questions, Geometry Success in 20 Minutes a Day, and 501 Geometry Questions can provide more detail on these to Use This BookFirst, look at the table of contents to see the math topics covered in this book. The book is divided into six sections: Miscellaneous Math, Fractions, Decimals, Percents, Algebra, and Geometry. The structure follows a common sequence of math concepts. You may want to follow the sequence because Introduction7305_501 MathWordProblems_CS4_[FIN_MT].indd 79/10/12 3:47 PMv i i i501 Math Word Problemsthe concepts become more advanced as the book progresses.

5 However, if your skills are just rusty, or if you are using this book to supplement topics you are currently learning, you may want to jump around from topic to you complete the math Problems in this book, you will undoubtedly want to check your answers against the answer explanation section at the end of each chapter. Every problem in 501 Math Word Problems has a complete answer explanation. For Problems that require more than one step, a thorough step-by-step explanation is provided. This will help you understand the problem-solving process.

6 The purpose of drill and skill practice is to make you proficient at solving Problems . Like an athlete preparing for the next season or a musician warming up for a concert, you become skilled with practice. If, after completing all the Problems in a section, you feel you need more practice, do the Problems again. It s not the answer that matters most it s the process and the reasoning skills that you want to will probably want to have a calculator handy as you work through some of the sections. It s always a good idea to use it to check your calculations.

7 If you have difficulty factoring numbers, the multiplication chart on the next page may help you. If you are unfamiliar with prime numbers, use the list on the next page so you won t waste time trying to factor numbers that can t be factored. And don t forget to keep lots of scrap paper on a CommitmentSuccess does not come without effort. Make the commitment to improve your math skills, and work for understanding. Why you perform a math operation is just as important as how you do it. If you truly want to be successful, make a commitment to spend the time you need to do a good job.

8 You can do it! When you achieve math success, you have laid the foundation for future challenges and success. So sharpen your pencil and practice!7305_501 MathWordProblems_CS4_[FIN_MT].indd 89/10/12 3:47 PMMultiplication Table 2 3 4 5 6 7 8 9 10 11 122 4 6 8 10 12 14 16 18 20 22 243 6 9 12 15 18 21 24 27 30 33 364 8 12 16 20 24 28 32 36 40 44 485 10 15 20 25 30 35 40 45 50 55 606 12 18 24 30 36 42 48 54 60 66 727 14 21 28 35 42 49 56 63 70 77 848 16 24 32 40 48 56 64 72 80 88 969 18 27 36 45 54 63 72 81 90 99 10810 20 30 40 50 60 70 80 90 100 110 12011 22 33 44 55 66 77 88 99 110 121 13212 24 36 48 60 72 84 96 108 120 132 144 Prime Numbers < 1.

9 0152 3 5 7 11 13 17 19 23 2931 37 41 43 47 53 59 61 67 7173 79 83 89 97 101 103 107 109 113127 131 137 139 149 151 157 163 167 173179 181 191 193 197 199 211 223 227 229233 239 241 251 257 263 269 271 277 281283 293 307 311 313 317 331 337 347 349353 359 367 373 379 383 389 397 401 409419 421 431 433 439 443 449 457 461 463467 479 487 491 499 503 509 521 523 541547 557 563 569 571 577 587 593 599 601607 613 617 619 631 641 643 647 653 659661 673 677 683 691 701 709 719 727 733739 743 751 757 761 769 773 787 797 809811 821 823 827 829 839 853 857 859 863877 881 883 887 907 911 919 929 937 941947 953 967 971 977 983 991 997 1,009 1,0137305_501 MathWordProblems_CS4_[FIN_MT].

10 Indd 99/10/12 3:47 PM7305_501 MathWordProblems_CS4_[FIN_MT].indd 109/10/12 3:47 PM501 Math Word Problems7305_501 MathWordProblems_CS4_[FIN_MT].indd 119/10/12 3:47 PM7305_501 MathWordProblems_CS4_[FIN_MT].indd 129/10/12 3:47 PMThis chapter consists of 63 Problems dealing with basic math concepts, including whole numbers, negative numbers, exponents, and square roots. It will provide a warm-up session before you move on to more dif-ficult Problems . 1. Bonnie has twice as many cousins as Robert. George has 5 cousins, which is 9 fewer than Bonnie has.