As children progress through KS2 they will learn more about measures in Maths. As well as understanding the different values of the metric measures (for example that 2 litres = 2,000 millilitres), in Year Four children will be exposed to some of the old imperial measures such as pints. They will also learn how to write measurements using more than one type of measure, for example 2.5 metres as 2m 50cm.

To measure liquid capacity, millilitres, centilitres and litres are used. These are called metric measures but we some times use other measures like gallons or pints. These are known as imperial measures. There are more imperial measures that we sometimes use - miles for long distances, stones for weights and inches for short distances instead of the metric kilometres, kilograms and centimetres.

Do you know your litres from your pints? Test your knowledge of measures by playing this quiz.

1.

Which unit would you use to measure the length of a fly?

Kilometre

Millimetre

Centimetre

Metre

Flies are very small so mm would be best

2.

Which of the following could be the weight of a small puppy, for instance a Chihuahua?

100g

10kg

100kg

50g

A larger puppy, such as a Great Dane, can weigh as much as 1kg at birth!

3.

How many grams are equivalent to one quarter kg?

25g

250g

250.5g

2,500g

There are 1,000g in a kg so divide by 4

4.

What is half of 1 metre in cm?

0.5cm

5cm

50cm

500cm

1m = 100cm so a half of 100 is 50

5.

10 millimetres is equal to?

1cm

10cm

100cm

1,000cm

1m = 100cm = 1,000mm

6.

How many millimetres in one metre?

10mm

100mm

1,000mm

10,000mm

The prefix 'milli' means the same as ^{1}⁄_{1,000}

7.

What is 6.45m expressed in metres and cm?

6m 45cm

64m 5cm

0m 645cm

645m 0cm

Here the numbers to the left of the decimal point are metres. The first two numbers to the right of the decimal point are cm. If there was a third number to the right of the decimal point then all three would be mm

8.

Which of these statements is true?

Pint > 1 litre

Pint = 1 litre

Pint > 0.5 litre

Pint = 2 litres

A pint is slightly more than half a litre

9.

How do we write 451cm in m?

0.451m

4.51m

45.1m

451m

Divide by 100 to convert centimetres to metres

10.

What is one tenth of a litre in millilitres?

0.1ml

1ml

10ml

100ml

There are 1,000 ml in a litre so divide by 10