Covers the Cambridge IGCSE syllabus (0455) and the Cambridge O Level syllabus (2281), first examination from 2020. Economics relates to every aspect of our lives, from the decisions we make as individuals to the structures created by governments and firms.Thinking like an economist can help us all make better choices.With exam-style questions and specific skills practice, this revision guide helps students build their knowledge and understanding of economic theory, giving them confidence to achieve their potential in examinations.Answers are at the back of the book so that students are free to self-study.