• measurement of length in kilometres (km)

• conversion of a measurement in compound units to the smaller unit, and vice versa,

∗ kilometres and metres,∗ metres and centimetres

What will we learn today?

MeasurementLength

You can measure how long things

are, or how tall, or how far apart

they are. Those are all examples of

length measurements.

These are the most common measurements:

• Millimetres

• Centimetres

• Metres

• Kilometres

• A meter is equal to 100 centimetres.– 1 m = 100 cm– The length of this guitar is about 1

meter–Meters might be used to measure the

length of a house, or the size of a playground.

• A kilometre is equal to 1000 meters.– 1km = 1000m–When you need to get from one place to

another, you measure the distance using kilometres (km).

– The distance from one city to another or how far a plane travels would be measured using kilometres (km).

Try this out!

1) The width of a table is 200 cm.

How many metres is that?

Solution

1) The width of a table is 200 cm.

How many metres is that?

Since 1m=100cm, therefore 200cm is 2m.

Answer: 2 m

Try this out!

1) The length of a park is 1000 m.

How many kilometre(s) is that?

Try this out!

1) The length of a park is 1000 m.

How many kilometre(s) is that?

1km = 1000m

Answer: 1 km

Are you ready to try out the questions?