This exercise tests your knowledge of the Tables of Unit Conversion Information.
You should know which conversions are exact (e.g.,
[beautiful math coming... please be patient]
$\,1\text{ m}\,$ is equal to $\,100\text{ cm}\,$)
and which conversions are approximate (e.g.,
[beautiful math coming... please be patient]
$\,1\text{ cm}\,$ is approximately equal to $\,0.4\text{ in}\,$).