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A ruler marked with inches and centimetres.

You will have seen inches and centimetres on your rulers at school.

Measures 2 (Very Easy)

Measures are part of everyday life, from cooking to travelling. In 11 Plus Maths, you’ll explore how to read scales, compare quantities, and convert between units.

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Fascinating Fact:

A tonne is 1000 kilograms, so an elephant that weighs 6 tonnes weighs about as much as 6000 bags of sugar.

In 11 Plus Maths, pupils learn to compare and convert between metric and imperial units. Understanding how measurements work builds confidence for solving real-world problems.

Key Terms

Kilogram (kg): A metric unit used to measure mass or weight.
Litre (L): A metric unit used for measuring volume or liquid capacity.
Conversion: The process of changing one unit of measurement into another, like metres to centimetres.

Parents can explore examples of 11 Plus style questions in our guide to 11 Plus sample questions.

Frequently Asked Questions (Click to see answers)

What are the main metric units of measurement?

The main metric units are millimetres, centimetres, metres, and kilometres for length, grams and kilograms for weight, and millilitres and litres for capacity.

How do I convert between kilograms and grams?

There are 1000 grams in one kilogram. To convert kilograms to grams, multiply by 1000. To convert grams to kilograms, divide by 1000.

What is the difference between metric and imperial units?

Metric units are based on powers of ten, like metres and kilograms, while imperial units include feet, inches, and pounds, which are used mainly in older systems.

Try These Related Quizzes

1 .

How many inches are there in a foot?

There are 12 inches in 1 foot. You may have heard of someone being 5 feet 11 inches tall, but never 5 feet 12 inches tall: that would be 6 feet

2 .

How many feet are there in a yard?

There are three feet in a yard. If someone is 6 feet tall, they are also two yards tall

3 .

How many yards are there in a mile?

1,000

1,760

2,000

2,100

A mile was originally 1,000 paces. Of course, people have different leg lengths, so this was standardised to 1,760 yards under the reign of Henry VIII

4 .

How many square metres are there in one hectare?

100

100,000

1,000

10,000

When the metric system was introduced, the 'are' was 100 square metres. A hectare was 100 'ares', (hecto means 100, just as kilo means 1,000), 100 x 100 = 10,000 m²

5 .

Metric measures are based on tens, hundreds and thousands. What are imperial measures based on?

Twelves, twenty-fours and thirty-sixes

Body parts

Henry VIII's whims

A mixture of things

Some imperial meaures, like the foot for example, are based on body parts. Others are based on seemingly random things, like the size of barley grains, the distance travelled in an hour or the amount of land an ox can plough in a day!

6 .

How many inches are there in one yard?

There are 3 feet in a yard and 12 inches in a foot: 12 x 3 = 36

7 .

How many feet are there in a mile?

5,280

1,760

10,560

10,000

There are 1,760 yards in a mile and 3 feet in a yard: 1,760 x 3 = 5,280

8 .

If 1 inch = 2.54 cm, how many cm are in two feet?

60.96

There are 12 inches in 1 foot, so there must be 24 inches in 2 feet. 24 x 2.54 = 60.96.
You may have heard that there are 30 cm in 1 foot but this is an approximation. There are actually 30.48 cm in 1 foot

9 .

If 1 mile = 1.6 km, how many km are in 10 miles?

To convert miles to km (approximately) multiply the number of miles by 1.6: 10 x 1.6 = 16

10 .

If 1 cm = 0.39 inches, how many inches are in one metre?

400

390

Again, this is an approximation. There are actually 39.3701 inches in 1 metre - converting imperial to metric (and vice versa) is not so simple!

Author: Frank Evans (Specialist 11 Plus Teacher and Tutor)