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  Twenty and Twenty More Skills (Hard Copy Books)

 

$50.79

 

 

Twenty Problem Solving Skills for Mathcounts Competitions

 
 

 
TABLE OF CONTENTS
 

Chapter 1 Magic Squares                                                                      1

Chapter 2 LCM and GCF                                                                      12                   

Chapter 3 Tiles                                                                                       24                   

Chapter 4 How Many Faces Are Painted                                             29                   

Chapter 5 How Many Triangles With Integer Lengths                       35                   

Chapter 6 How Many Ways To Walk                                                   42                   

Chapter 7 Newton's Little Formula                                                       57                   

Chapter 8 Integer Solutions (Part 1)                                                     70                   

Chapter 9 Integer Solutions (Part 2)                                                     81                   

Chapter 10 PIE (Principle of Inclusion and Exclusion)                         92                   

Chapter 11 Pythagorean Triples                                                           106                 

Chapter 12 Cutting Regions                                                                  112                 

Chapter 13 Counting Triangles                                                             124                 

Chapter 14 Counting Rectangles                                                          133                 

Chapter 15 Balls and Boxes                                                                  147                 

Chapter 16 Clock Problems                                                                   165                 

Chapter 17 Page Numbers                                                                     176                 

Chapter 18 Maximum With Inequality                                                 185                 

Chapter 19 Digits Arrangement                                                            196                 

Chapter 20 Perimeter, Area, and Volume                                             203     

Index                                                                                                        227     

Twenty More Problem Solving Skills for Mathcounts Competitions

 
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TABLE OF CONTENTS
Chapter 1 Modular Arithmetic                                                                          1

Chapter 2 Divisor and Divisibility                                                                    18

Chapter 3 Last Digit and Remainder                                                                40

Chapter 4 Number Bases                                                                                  52

Chapter 5 Special Numbers                                                                              66

Chapter 6 Diophantine Equations                                                                     77

Chapter 7 Permutations of Digits and Sum of N-Digit Numbers                    90

Chapter 8 Arithmetic Sequence and Common Terms                                     111

Chapter 9 Absolute Value and Inequalities                                                     125

Chapter 10 Probability Problems                                                                     146

Chapter 11 Recurrence Relations                                                                   169

Chapter 12 Consecutive Integers                                                                    198

Chapter 13 Proportion and Slow/Fast Watch Problems                                  212

Chapter 14 Words Problems Related to Work                                               227

Chapter 15 Net                                                                                                 242

Chapter 16 Longest Path and Shortest Distance                                            269

Chapter 17 Folding Paper                                                                                 289

Chapter 18 Problems with Analytic Geometry                                                307

Chapter 19 Grids                                                                                               322

Chapter 20 Back Calculation                                                                            335

Index                                                                                                                  353

You can purchase a hard copy of the book at amazon.com or the following web site:

Twenty Problem Solving Skills Book

 
 

     
 
 
Copyright © 2010 by Jane Chen. All rights reserved.