Key Concepts in Compound Measures
- Speed, distance, time
- Density, mass, volume
- Pressure, force, area
- Unit conversions for compound measures
- Average speed problems
Exam Tips for Compound Measures
- 💡Use the triangle method: cover the quantity you want to find
- 💡Speed = Distance ÷ Time; Distance = Speed × Time
- 💡Average speed = total distance ÷ total time (not average of speeds)
Exam Board Coverage
Compound Measures appears on all major GCSE Maths exam boards at both Foundation and Higher tier.
AQA
Edexcel
OCR
Frequently Asked Questions
What is a compound measure?
A compound measure is one that involves two or more units, such as speed (km/h), density (g/cm³) or pressure (N/m²).
How do I calculate average speed?
Average speed = total distance ÷ total time. You cannot simply average two speeds — you must use the total distance and total time.