The SI unit of mass is 

Convert the following:

$568 \mathrm{cm}$into $\mathrm{m}$.

Look around and name at least two things that are measured in centimetre.

Look around and name at least two things that are measured in millimetre.

$8300 \mathrm{km}$ into $\mathrm{m}$.

Look around and name at least two things that are measured in metre.

$22.4 \mathrm{cm}$ into $\mathrm{mm}$.