7.1 Units of measure and conversions — Practise

1. Convert $3.45$ km to metres.
2. Convert $750$ ml to litres.
3. Convert $0.8$ m$^2$ to cm$^2$.
4. A map scale is $1:25\,000$. Two towns are $6.4$ cm apart. Find the real distance in kilometres.
5. A plan uses scale $1:80$. Find the drawing length for a real wall measuring $4$ m.
6. A boat travels on a bearing of $072^\circ$. Give the reverse bearing.
7. A bearing is measured clockwise from which direction?
8. Convert $2.3$ tonnes to kilograms.
9. H H A map distance is $7.5$ cm and the real distance is $3$ km. Find the scale in the form $1:n$.
10. H H Convert $35\,000$ cm$^2$ to m$^2$.