# Using the inverse operation to find missing numbers

In this lesson, we will use our knowledge of multiplication and division 'fact families' in order to find the missing number in a range of questions. We will use arrays to represent the relationship between inverse operations, and explore how fact families around multiplication and division help us discover new facts about multiplication and division.

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# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

# 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.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

# Using the inverse operation to find missing numbers

Let's see what you have learnt today about 'fact families'

# Using the inverse operation to find missing numbers

Let's see what you have learnt today about 'fact families'

# Lesson summary: Using the inverse operation to find missing numbers

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## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:

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On the spot:

Chair yoga