《GRE数学官方指南 第3版》由GRE考试出题方美国教育考试服务中心编著，全面介绍了GRE数学考试相关信息，帮助考生熟悉考试流程，并对GRE数学四大题型进行详细讲解。本书有针对性地提供备考策略，提供大量相应真题，并附有详细的答案解析，另有五套GRE数学全真模拟试题及答案详解，涵盖真题考点，帮助考生进行自测。附录部分详细讲解算术、代数、几何、数据分析知识点，帮助考生巩固知识。

《GRE数学官方指南 第3版》由GRE考试出题方美国教育考试服务中心编著，是GRE考试官方信息的来源。本书针对2023年9月的GRE考试改革，除总体介绍考试内容和备考策略外，还全面介绍了GRE数学官方考试信息，详解GRE数学考试内容、结构、评分体系、备考策略等。

书中重点介绍了算术、代数、几何、数据分析四个方面的内容，提供大量GRE数学真题，并穿插实用的答题提示和备考建议。每道题都附有详细的答案解析，帮助考生透彻理解，把握出题思路。提供五套完整的GRE数学测试题，涵盖真题考点，帮助考生进行自测。

How to Use This Book

This book provides important information about the Quantitative Reasoning measure of the GRE General Test, including the knowledge and skills that are assessed and the types of questions that appear. The book will help you:

Familiarize yourself with the test format and test question types

Learn valuable test-taking strategies for each question type

Review the math topics you need to know for the test

Check your progress with Quantitative Reasoning practice questions

The following four-step program has been designed to help you make the best use of this book.

STEP 1 Learn About the GRE Quantitative Reasoning Measure

Chapter 1 of this book provides an overview of the GRE Quantitative Reasoning measure. Read this chapter to learn about the number of questions, time limits, and the test design features. You will also find valuable test-taking strategies from ETS and important information about how the measure is scored.

STEP 2 Study the Different GRE Quantitative Reasoning Question Types

Chapter 2 of this book describes the types of questions you will encounter in the Quantitative Reasoning measure. You will learn what the questions are designed to measure, and you will get tips for answering each question type. You will also see samples of each question type, with helpful explanations.

STEP 3 Practice Answering GRE Quantitative Reasoning Questions

Chapters 3, 4, 5, and 6 contain sets of authentic Quantitative Reasoning practice questions in the content areas of Arithmetic, Algebra, Geometry, and Data Analysis, respectively. Answer the questions in each set, and then read through the explanations to see which questions you found most challenging. Look for patterns. Did specific content areas give you trouble? You can refresh your math skills in these areas with the GRE Math Review in Appendix A. The

GRE Math Review is a review of the math topics that are likely to appear on the Quantitative Reasoning measure. Each section of the GRE Math Review ends with exercises that will help you see how well you have mastered the material. Note that Appendix B provides information about the mathematical conventions that are used on the Quantitative Reasoning measure.

Prior to answering the practice questions, it might be helpful to review these conventions.

STEP 4 Test Yourself With the Mixed Practice Sets

Once you have completed the practice sets for each content area in Chapters 36, it is time to practice with authentic GRE questions in the Mixed Practice Sets in Chapter 7. Each Mixed Practice Set includes the question types and content areas contained in an actual Quantitative Reasoning section of the GRE General Test.

美国教育考试服务中心：美国教育考试服务中心（Educational Testing Service）成立于1947年，是非盈利教育考试、评估和研究机构，为美国少儿教育和高等教育开发了多种考试。目前，该组织还为近200个国家的个人、教育机构和政府部门提供服务，每年开展上千万人次的考试，包括TOEFL、GRE、TOEIC等这些国际性考试。

How to Use This Book ...................................................................... xi

1 Overview of the GRE Quantitative Reasoning Measure 1

Introduction to the GRE General Test ............................................... 1

Structure of the Quantitative Reasoning Measure ................................ 2

Test-taking Strategies ........................................................................... 2

Scratch Paper ........................................................................................ 4

Scoring and Score Reporting ................................................................ 4

2 Test Content 7

Overview of the Quantitative Reasoning Measure ................................ 7

General Problem-solving Steps .............................................................. 9

Quantitative Reasoning Question Types ................................................ 14

Using the Calculator ............................................................................... 39

3 Arithmetic 43

Quantitative Reasoning Section Directions ........................................... 44

Quantitative Comparison Questions ...................................................... 45

Multiple-choice QuestionsSelect One Answer Choice ...................... 47

Multiple-choice QuestionsSelect One or More Answer Choices....... 49

Numeric Entry Questions ....................................................................... 50

Answer Key ............................................................................................ 51

Answers and Explanations .................................................................... 52

4 Algebra 65

Quantitative Reasoning Section Directions ........................................... 66

Quantitative Comparison Questions ...................................................... 67

Multiple-choice QuestionsSelect One Answer Choice ...................... 69

Multiple-choice QuestionsSelect One or More Answer Choices ....... 71

Numeric Entry Questions ........................................................................ 72

Answer Key ............................................................................................. 73

Answers and Explanations ....................................................................... 74

5 Geometry 85

Quantitative Reasoning Section Directions ........................................... 86

Quantitative Comparison Questions ....................................................... 87

Multiple-choice QuestionsSelect One Answer Choice ....................... 89

Multiple-choice QuestionsSelect One or More Answer Choices ....... 91

Numeric Entry Questions ........................................................................ 92

Answer Key ............................................................................................. 93

Answers and Explanations ....................................................................... 94

6 Data Analysis 105

Quantitative Reasoning Section Directions ........................................... 106

Quantitative Comparison Questions ...................................................... 107

Multiple-choice QuestionsSelect One Answer Choice ...................... 110

Multiple-choice QuestionsSelect One or More Answer Choices ....... 112

Numeric Entry Questions ........................................................................ 113

Data Interpretation Sets .......................................................................... 114

Answer Key ............................................................................................. 118

Answers and Explanations ....................................................................... 119

7 Mixed Practice Sets 139

Quant Practice Set 1 ..................................................................................140

Quant Practice Set 2 ..................................................................................158

Quant Practice Set 3 ..................................................................................173

Quant Practice Set 4 ..................................................................................192

Quant Practice Set 5 ..................................................................................210

Appendix A: GRE Math Review 229

Part 1.Arithmetic........................................................................................230

Part 2.Algebra............................................................................................247

Part 3.Geometry.........................................................................................278

Part 4.Data Analysis...................................................................................297

Appendix B: Mathematical Conventions 339