Measuring, Estimating and Units

Hong Kong

Stage 1 - Stage 3

Lesson

We use many different units of measurement and they tell us what it is that we are measuring. Here are some of the common units of measurement that are used.

Units of Measurement!

Length: mm, cm, m and km

Area: mm^{2}, cm^{2}, m^{2} and km^{2}

Volume: mm^{3}, cm^{3}, m^{3} and km^{3 }

Capacity: mL, L, kL, ML

Mass: mg, g, kg, tonne

Sometimes we need to determine what is the most appropriate unit for measuring a particular item so that we do not end up with unreasonably large or small numbers.

Have a look at this video to learn how to choose the most appropriate units of measurement.

Choose the most appropriate unit of measure for the mass of a biscuit.

Grams

AKilograms

BTonnes

C

It is most appropriate to use centimetres to measure:

Australia's Coastline

Aa dog

Ba running track

Ca pencil

D

It is most appropriate to use cubic metres ($m^3$`m`3) to measure:

a jug

Aa swimming pool

Ba salad bowl

Ca shoe

D