Length

We measure millimetres with a ruler. We write how long something is by writing the number followed by mm (this is short for millimetres).

Remember that for every centimetre there are 10 millimetres.

1cm = 10mm

=54mm

Measure objects around the house to the nearest millimetre and write down how long they are. What is the smallest and biggest object you can find?

Volume

Volume is the amount of space something takes up. We measure volume in either millilitres ml, centilitres cl, cubic centimetres cm³ or litres l.

Capacity Countdown
Read the scale to work out the volume of liquid in the rocket.

Mass

Mass tells us how much 'stuff' there is in a object. We measure mass in either milligrams mg, grams g, kilograms kg or tonnes t.

Reading Scales
Read the weight on the scales and type in the correct reading.