In KS2 Maths, children will learn more about measures. In Year Three children will become familiar with grams and kilograms, litres and millilitres, and centimetres, metres and kilometres, and they should be able to choose the correct unit for different types of measurement, for example the use of centimetres, metres and kilometres to measure short, medium and long lengths respectively.
Millimetres, centimetres and metres are all types of measures. Measures can be used for the measurement of length (like centimetres, metres and kilometres), mass or weight (grams and kilograms) and liquid capacity (litres and millilitres). Measurements are a big part of everyday life. Imagine buying a new pair of trousers and shoes not knowing the size of your waist or feet!
Take our measures quiz and find out how you size up with measures!














We can shorten kilometre to km and metre to m

We can shorten centimetre to cm


We can shorten kilogram to kg and gram to g

We can shorten litre to l and millilitre to ml


3.05 x 100 = 305

2.5m could also be written as 250cm


Grams and kilograms are both used to measure weight

Centimetres and kilometres both measure length but we use km for long distances and cm for short ones


Grams are used to measure small weights like the amount of flour or sugar in a cake

Centimetres, metres and kilometres can all measure height. If your ceiling was 5.5km high you would live in the largest building ever built and if it were only 2cm high you wouldn't be able to get in!
