I consider myself to be comfortable using metric units. I know the standard prefixes and how to convert between units. Having said that, I did not get a perfect score on this quiz the first time I took it. You know how you can talk yourself out of the right answer? Yeah... I did that. Let's see if you will too. You might want to review the metric prefixes
or you can just be bold and take the quiz
. If you score perfectly, no gloating is allowed.