# Multiplication as scaling

In this lesson, we will explore multiplication involving at least one positive number and learn how it is possible to visualise multiplication as a stretch by a scale factor.

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Quiz:

# 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!

Q1.Which word best completes the gap: -14 and 14 are additive inverses as they sum to ____

1/5

Q2.Which words (in order) best complete this sentence: __________________________ can be viewed as the ________________________ of the additive inverse.

2/5

Q3.Complete the gap: -3 - (-5) = (-3) + _____

3/5

Q4.Which calculation gives the smallest answer?

4/5

Q5.Which calculation gives the largest answer?

5/5

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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# 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!

Q1.Which word best completes the gap: -14 and 14 are additive inverses as they sum to ____

1/5

Q2.Which words (in order) best complete this sentence: __________________________ can be viewed as the ________________________ of the additive inverse.

2/5

Q3.Complete the gap: -3 - (-5) = (-3) + _____

3/5

Q4.Which calculation gives the smallest answer?

4/5

Q5.Which calculation gives the largest answer?

5/5

# 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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Multiplication as Scaling Quiz

Have a go at the questions below!

Q1.Fill in the gap: Multiplication when viewed as scaling can be thought of as a ___________.

1/8

Q2.Fill in the gap: Looking at the diagram below we can use a ___________ to describe how much the number was scaled by.

2/8

Q3.Fill in the gap: In the diagram below the top arrow can be visualised as stretching -10 by a scale factor of_____.

3/8

Q4.Calculate the following product: 9 x (-12)

4/8

Q5.Calculate the following product: 0.5 x (-12)

5/8

Q6.Which calculation best represents the unlabelled arrow?

6/8

Q7.Which calculation best represents the unlabelled arrow.

7/8

Q8.Calculate: 3 x (-2) + 7 x (-3) - (-27)

8/8

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.

#### Unit quizzes are being retired in August 2023

Why we're removing unit quizzes from the website >
Quiz:

# Multiplication as Scaling Quiz

Have a go at the questions below!

Q1.Fill in the gap: Multiplication when viewed as scaling can be thought of as a ___________.

1/8

Q2.Fill in the gap: Looking at the diagram below we can use a ___________ to describe how much the number was scaled by.

2/8

Q3.Fill in the gap: In the diagram below the top arrow can be visualised as stretching -10 by a scale factor of_____.

3/8

Q4.Calculate the following product: 9 x (-12)

4/8

Q5.Calculate the following product: 0.5 x (-12)

5/8

Q6.Which calculation best represents the unlabelled arrow?

6/8

Q7.Which calculation best represents the unlabelled arrow.

7/8

Q8.Calculate: 3 x (-2) + 7 x (-3) - (-27)

8/8

# Lesson summary: Multiplication as scaling

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## Time to move!

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

For 5 mins...

Move around:
Climb stairs

On the spot:
Dance