# Use knowledge of 1,000 to explain common measure conversions

You can use knowledge of 1,000 to explain common measure conversions.

# Use knowledge of 1,000 to explain common measure conversions

You can use knowledge of 1,000 to explain common measure conversions.

## Lesson details

### Key learning points

- There are 1,000 m in a km and 1,000 mm in a m
- There are 1,000 ml in a l and 1,000 g in a kg
- Milli means 1,000 times smaller
- Kilo means 1,000 times larger

### Common misconception

Pupils can be misled by the meaning of the prefix 'milli', as it sounds like one million. They therefore presume a millimetre is one millionth of a metre, or that one metre is one million millimetres.

The etymology of the prefixes 'milli' and 'kilo' are discussed in the lesson. You may wish to extend this by talking about other examples. Adding the words and their meanings to your Maths area will serve as a useful reminder, as will flash cards.

### Keywords

Millimetre - A metric measure of distance used for small lengths.

Metre - The basic unit of length (or distance) in the metric system.

Kilometre - A metric measure of distance, equal to 1,000 metres.

Gram / Kilogram - A gram (g) is a measure of mass. 1,000 grams are equivalent to one kilogram (kg).

Millilitre / litre - A millilitre (ml) is a measure of capacity. 1,000 millilitres are equivalent to one litre (l)

### Equipment

Trundle wheel (ideally one between two), metre sticks.

### Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

## Video

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## Starter quiz

### 6 Questions

length

mass

capacity