Metric and imperial units

These Olympic quantities have been jumbled up! Can you put them back together again?

The triathlon is a physically gruelling challenge. Can you work out which athlete burnt the most calories?

Could nanotechnology be used to see if an artery is blocked? Or is this just science fiction?

Can you use this information to estimate how much the different fruit selections weigh in kilos and pounds?

How will you find out how much a tank of petrol costs?

My measurements have got all jumbled up! Swap them around and see if you can find a combination where every measurement is valid.

Grandpa was measuring a rug using yards, feet and inches. Can you help William to work out its area?

Use this information to work out whether the front or back wheel of this bicycle gets more wear and tear.

A security camera, taking pictures each half a second, films a cyclist going by. In the film, the cyclist appears to go forward while the wheels appear to go backwards. Why?