Year 11 - Maths
Converting between metric and imperial speed measures
Compound measures
Study Hub
Study Guides
This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
In this unit, pupils explore the multiplicative relationship between different compound meaures and units such as speed, rates of pay, density and pressure.
Lesson Summary
You will learn to convert between metric and imperial speed measures.
Key Notes
- Sometimes speed is measured in different units.
- Approximately 17 countries (roughly 9%) use mph.
- When travelling abroad, it is useful to convert speed limits to help judge the speed of the road.
Vocabulary To Learn
- Metric: Metric units are based around the standard units of metre, gram and litre.
- Imperial: Imperial is a system of units for measuring, which was created in the early 1800s during the British Empire.
- Speed: Speed is the rate at which something is moving. It is measured as the distance travelled per unit of time.
- Direct proportion: Two variables are in direct proportion if they have a constant multiplicative relationship.
Common Mistakes To Avoid
- E.g 4.5 hours is 4 hours and 50 minutes
3 Quick Questions (With Answers)
1. Solve this in steps: explain the method from this lesson and why each step matters.
Sometimes speed is measured in different units. Approximately 17 countries (roughly 9%) use mph.
2. Use this key word in a maths sentence and explain it clearly. 'Metric'
Metric units are based around the standard units of metre, gram and litre. Use this word when showing your method, then check your final answer is reasonable.
3. Spot and fix this common maths mistake.
Mistake: E.g 4.5 hours is 4 hours and 50 minutes. Correction: Encouraging pupils to use ratio tables to represent proportional relationships using minutes allows them to appreciate the multiplier of 60 when converting hours to minutes, or minutes to seconds.
More Lessons In This Unit
- Advanced problem solving with compound measures Study Guide
- Checking and further securing understanding of direct proportion in context Study Guide
- Combining densities Study Guide
- Combining speeds Study Guide
- Compound measures for density Study Guide
- Compound measures for pressure Study Guide
- Compound measures for speed Study Guide
- Converting between metric speed measures Study Guide
- Converting between other compound measures Study Guide
- Problem solving with compound measures Study Guide
Browse all guides in the Year 11 Maths guide library.