Is the symbol for a million M or m? Does it matter which symbol we use?

Read this Guide to find out the answer to the first question. Find out if you agree with us that the answer to the second question is yes!

In science, it is important that we are able to present results in a way that minimises confusion. Scientists therefore adopt a common system for presenting data that is widely used and understood.

This guide will:

• help you remember the units and symbols that you may meet in your science courses
• remind you of the importance of using units correctly.