# Convert Between cm, m and km

In this worksheet, students will convert between different units of measure including cm, m and km.

Key stage:  KS 2

Curriculum topic:   Measurement

Curriculum subtopic:   Convert Between Metric Measurements

Difficulty level:

#### Worksheet Overview

In this activity, we're going to be converting measures between different units of length including cm, m and km.

Things we need to know:

There are 100 cm in 1 m

There are 1,000 m in 1 km

cm = centimetre

m = metre

km = kilometre (kilo means 1,000)

Let's have a look at an example:

Convert 4,500 m into km.

We know that there are 1,000 m in 1 km.

To convert m to km we simply need to divide 4,500 by 1,000

4,500 ÷ 1,000 = 4.5  (all the digits move 3 places to the right)

Now let's look at another question -  this time as a word problem:

Sam has a  piece of rope that is 5 m in length.

He cuts the rope into 2 equal pieces.

How many cm is each piece of rope?

We know that Sam has 5 m of rope and that half of 5 is 2.5

2.5 m is equal to 250 cm (2.5 x 100)

Each piece is 250 cm long.

Now, why don't you have a go at some questions?

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