# Enlargement by a non-integer scale factor

In this lesson, we will learn how to enlarge shapes by a non-integer scale factor. It would be helpful if you could have squared paper and a ruler for this lesson.

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.A shape is enlarged by an integer scale factor more than 1. What does not change from the object to the image?

1/3

Q2.A square is enlarged by a scale factor of 3. The object had side length 4cm, what is side length of the image?

2/3

Q3.A regular pentagon has been enlarged by scale factor 5. The side length of the image is 35mm, what is the side length of the object?

3/3

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.A shape is enlarged by an integer scale factor more than 1. What does not change from the object to the image?

1/3

Q2.A square is enlarged by a scale factor of 3. The object had side length 4cm, what is side length of the image?

2/3

Q3.A regular pentagon has been enlarged by scale factor 5. The side length of the image is 35mm, what is the side length of the object?

3/3

# 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.

Quiz:

# Enlargement by a non-integer scale factor quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Which of these statements best describes a 'non-integer'?

1/3

Q2.A square has side length 12cm. It is enlarged by scale factor 2/5. What is the side length of the image?

2/3

Q3.A regular hexagon is enlarged by a scale factor of 3.5. The image side length is 31.5m. What is the side length of the object?

3/3

Quiz:

# Enlargement by a non-integer scale factor quiz

Don’t worry if you get a question wrong! Forgetting is an important step in learning. We will recap next lesson.

Q1.Which of these statements best describes a 'non-integer'?

1/3

Q2.A square has side length 12cm. It is enlarged by scale factor 2/5. What is the side length of the image?

2/3

Q3.A regular hexagon is enlarged by a scale factor of 3.5. The image side length is 31.5m. What is the side length of the object?

3/3

# Lesson summary: Enlargement by a non-integer scale factor

## 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:
Chair yoga