Compound measures, units and time

By the end you’ll be able to

• Use and rearrange speed = distance ÷ time, density = mass ÷ volume and pressure = force ÷ area, including average speed over multi-stage journeys
• Convert between metric units, including area units (e.g. $\text{cm}^2$ to $\text{m}^2$) and volume units, and between compound units (e.g. km/h to m/s)
• Solve rate problems such as flow rates, fuel consumption, unit pricing and exchange rates