# Select the Most Appropriate Unit of Measurement

In this worksheet, students will choose the most appropriate unit to measure various things.

Key stage:  KS 3

Curriculum topic:   Number

Curriculum subtopic:   Use Standard Units of Measure

Difficulty level:

#### Worksheet Overview

We use the metric system to measure quantities in our everyday life.

Look at the table which shows some commonly used units for measuring length, capacity and mass.

 Length Capacity Mass millimetres millilitres milligrams centimetres litres grams metres kilograms kilometres tonnes

We need to be able to decide which measurement would be most appropriate to use in various circumstances.

For example, we wouldn't want to measure the distance from London to Edinburgh in centimetres!

Equally, we wouldn't want to measure the mass of an apple in tonnes!

Can you explain why these measures are not sensible?

We're going to look at some questions about choosing the most appropriate measure.

Let's get started.

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