GCSE · Compound units & rates

Converting compound units and rates of flowExam-style questions

Why converting a compound unit means converting both of its parts, where the ÷3.6 between km/h and m/s comes from, why g/cm³ to kg/m³ is ×1000, and how rates of flow work.

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13 questions · GCSE (Higher) level · mark scheme and worked solution on each · no sign-up to try

DifficultyAll Level 2 Level 3 Level 4 Level 5

1
A car uses $6$ litres of fuel for every $100$ km it travels.

How far can the car travel on $27$ litres of fuel? (2 marks)
Level 2 · 2 marksTry it
2
Amelia is paid £ $8.40$ per hour.

Work out her rate of pay in pence per minute.
Level 2 · 2 marksTry it
3
Convert 54 km/h into m/s.
Level 3 · 3 marksTry it
4
Convert 8 m/s into km/h.
Level 3 · 2 marksTry it
5
The speed limit on a UK motorway is $65$ mph on a stretch with roadworks.

Using $5$ miles $= 8$ km, convert $65$ mph into km/h.
Level 3 · 2 marksTry it

8 more questions on converting compound units and rates of flow

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