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How long is this nail?
From one end of the nail to the other is 3 cm.
This is the length of the nail.
| Length is the measurement of something from one end to the other. |
You measure length all the time. Here are some examples:
Did you notice that different words such as width or distance can be used to describe the same thing, length?
Did you also notice the different units of measurements used? Here is a reminder of the metric units for length:
| Abbreviation | Full form | Meaning | Equivalent |
| mm | millimetre | One thousandth of a metre | 10 mm = 1 cm 1 000 mm = 1 m |
| cm | centimetre | One hundredth of a metre | 100 cm = 1 m |
| m | metre | 1 000 m = 1 km | |
| km | kilometre | One thousand metres | 1 000 m = 1 km |
You can read about imperial measurements in factsheet 8.
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You can find Skillswise at http://www.bbc.co.uk/skillswise
This factsheet is BBC Copyright |