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Year 11 - Maths

Compound measures for speed

Compound measures

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 use compound measures for speed.

Key Notes

  • Average speed can be calculated by dividing the distance travelled by the time taken.
  • The units for time and distance determine the units for speed.
  • By rearranging the formula, you can calculate either distance or time.
  • Pace can be calculated by dividing time taken by distance travelled.

Vocabulary To Learn

  • Speed: Speed is the rate at which something is moving. It is measured as the distance travelled per unit of time.
  • Pace: Pace is the rate of movement. It is measured as the time taken per unit of distance.

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.

Average speed can be calculated by dividing the distance travelled by the time taken. The units for time and distance determine the units for speed.

2. Use this key word in a maths sentence and explain it clearly. 'Speed'

Speed is the rate at which something is moving. It is measured as the distance travelled per unit of time. 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

Browse all guides in the Year 11 Maths guide library.