# Arithmetic expressions

This lesson has been designed to ensure that you understand the rules of operator precedence when evaluating arithmetic expressions. You will be reminded of BIDMAS, before investigating code that uses various arithmetic expressions. This lesson will prepare you for the next lesson, where you will begin to use conditions in programming.

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

- Click "Close Video"
- Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

# Lesson summary: Arithmetic expressions

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