2026/27 Enrolment Open · Free Assessment
Cambridge IGCSE MathematicsSyllabus 0580Unit 6: Number
0580 Overview
CoreExtended
Chapter 21

Ratio, rate and proportion

Simplify and share ratios, apply map scales and compound rates, interpret distance–time and speed–time graphs, and solve direct and inverse proportion equations for Cambridge IGCSE Mathematics.

What You'll Learn

  • 01Simplifying and dividing in a ratio
  • 02Unitary ratios and map scales
  • 03Speed, density and pressure rates
  • 04Distance–time and speed–time graphs
  • 05Acceleration and area under graphs
  • 06Algebraic direct and inverse proportion
Resources

Topical Past Papers

Practice questions from licensed topical past papers organised around this topic.

View Topical Past Papers →

Chapter Topics

5 official subtopics
21.1Working with ratio
21.2Ratio and scale
21.3Rates and compound measures
21.4Kinematic graphs (distance–time and speed–time)
21.5Direct and inverse proportion
Extended

Your Learning Journey

Plan your chapter across focused 60-minute sessions.

5 Sessions5 Hours (300 min)
01
LEARN
60 MIN
21.1 Working with ratio
21.2 Ratio and scale
Session 1 of 5
02
LEARN
60 MIN
21.3 Rates and compound measures
21.4 Kinematic graphs (distance–time and speed–time)
Session 2 of 5
03
LEARN
60 MIN
21.5 Direct and inverse proportion
Session 3 of 5
04
PRACTICE
60 MIN
Chapter Practice
Session 4 of 5
05
EXAM
60 MIN
Past Paper Practice
Session 5 of 5
1-to-1 Mathematics Tuition · Cambridge IGCSE Mathematics

Master Chapter 21: Ratio, rate and proportion with Siddharth Agrawal

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