Principles of Economics
N. Gregory Mankiw · 9th Edition · ISBN 9780357038314 · Cengage
Complete chapter-by-chapter study guide aligned with Principles of Economics (9th Edition). Includes summaries, learning objectives, and exam-style practice questions for all 36 chapters.
Overview
Mankiw's Principles of Economics (9th Edition) is one of the most widely assigned introductory economics texts in the world, covering both microeconomics and macroeconomics in a single book. It opens with the ten principles of economics and how economists think, then builds the micro core — supply and demand, elasticity, government policies, market efficiency, externalities, public goods, firm costs, and market structures from perfect competition to monopoly and oligopoly. The macro half develops national income accounting, the cost of living, growth, saving and investment, unemployment, the monetary system, inflation, open-economy concepts, aggregate demand and supply, and monetary and fiscal policy. This study guide is built to match the textbook chapter for chapter, so you review in the same order your professor teaches and can connect the graphs and models the course relies on. It is an independent, aligned study guide — not the textbook and not a copy of it — focused on the key concepts, graphs, and applied reasoning so you can review high-yield material efficiently for midterms and finals.
Aligned with introductory principles of economics courses covering both micro and macro, with practice that mirrors the graphs, models, and applied questions tested on course midterms and finals.
What you'll learn
The major topics this guide walks you through, matched to the textbook's order:
- Ten principles of economics
- Supply and demand
- Elasticity and its application
- Market efficiency and welfare
- Externalities and public goods
- Costs of production
- Competitive markets and monopoly
- Monopolistic competition and oligopoly
- Measuring national income
- Production and economic growth
- The monetary system and inflation
- Unemployment
- Aggregate demand and supply
- Monetary and fiscal policy
Need the textbook itself?
Written by N. Gregory Mankiw and published by Cengage, Principles of Economics is among the best-selling introductory economics texts worldwide, known for its clear writing and its ten-principles framework used in intro courses everywhere.
Buy new, rent, or find a used copy of Principles of Economics below. Make sure you get the 9th Edition (ISBN 9780357038314) — editions differ, so double-check before you order. We earn a small commission if you buy through these links — your price is unchanged.
Chapters covered
Every chapter below is fully covered in the PDF — summary, learning objectives, key terms, and exam-style practice questions with rationales.
Questions about this study guide
What exactly do I get?
A printable PDF study guide covering all 36 chapters of Principles of Economics (9th Edition) — chapter summaries, learning objectives, and exam-style practice questions with rationales. One file, lifetime access, no subscription.
How soon will I get it?
Instantly. A download link appears on screen and lands in your inbox the moment your payment clears.
Does this cover both micro and macro?
Yes. The combined Principles of Economics text spans both halves, and this guide follows the 9th Edition (ISBN 9780357038314) across micro and macro chapters.
Will it help me with the graphs that show up on exams?
Economics exams lean heavily on graphs and models, and the guide focuses on understanding and applying them rather than just memorizing definitions.
Is there a separate micro-only or macro-only guide?
Yes. Mankiw also publishes standalone Principles of Microeconomics and Principles of Macroeconomics texts with their own aligned guides, so pick the one matching your course.
Will it match my edition?
This guide is built around the 9th Edition. If your class uses a different edition, chapter numbering may shift slightly, but the topics and learning objectives are usually unchanged.
Do I still need the textbook?
The study guide is a companion, not a replacement — it helps you study efficiently and review fast, but you'll still want the textbook for full depth and any assigned readings. You can buy new, rent, or find a used copy through the price links on this page.
What if it is not what I expected?
Every purchase is backed by a 14-day money-back guarantee — email us within 14 days for a full refund.
Is this a test bank or copied from the textbook?
No. This is an original study guide written to align with Principles of Economics — summaries, objectives, and practice questions with rationales, not a reproduced publisher test bank or copied text.
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About this study guide
This is an original study guide written to align with the topics and learning objectives covered in Principles of Economics (9th Edition) by N. Gregory Mankiw. It is not affiliated with, endorsed by, or licensed by Cengage or the textbook's authors. All summaries, practice questions, and explanations are independently authored.