How_To_Be_Good_At_Math

160

Length

Length is the distance between two points. We can measure

distances in metric units called millimetres (mm), centimetres (cm),

metres (m), and kilometres (km).

MEASUREMENT • LENGTH MEASUREMENT • LENGTH

Height means how

far something is

from the ground. But

it’s really no different

from length, so we

measure it in the same

units. This tall building

has a height of 700 m.

Metres and kilometres

We can use lots of different

words to describe lengths,

but they all mean the distance

between two points.

LENGTH

HEIGHT

The width of

something is a

measure of how far it

is from side to side. It’s

also a type of length.

The width of this

building is 250 m.

Another unit of

length is the

kilometre. There are

1000 m in 1 km.

The helicopter is flying

at a height of 1 km.

We can convert the

height of the

helicopter into metres

by multiplying by 1000.

So, the helicopter is

1000 m off the ground.

Another word we

use for length is

“distance”, which

means how far one

place is from another.

Long distances are

measured in kilometres.

H

WIDTH

160_161_Length.indd 160 29/02/2016 14:11