What is distance?
Distance measures length. For example, the distance of a snake is how long the snake is.
In the metric system of measurement, the most common units of distance are millimetres, centimetres, metres, and kilometres.
How big are metric units of distance?
A paper clip is about 1 millimetre thick.
A fingernail is about 1 centimetre wide.
The length of a guitar is about 1 metre.
A kilometre is equal to 1000 metres. (It is a little over half of a mile!)
Want to learn more about metric units of distance? Watch this video!