# Calculate Percentage Change

In this lesson, we will learn about how to determine the proportional percentage increase or decrease between two values

#### 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.Increase 70 by 35%

1/3

Q2.Decrease 225 by 75%

2/3

Q3.An adult ticket for the cinema costs £12.80. A child ticket is half the price of an adult ticket. Mr and Mrs Smith and their six children go to see a movie. Mrs Smith has a voucher for 22% off. How much money does she save?

3/3

#### 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.Increase 70 by 35%

1/3

Q2.Decrease 225 by 75%

2/3

Q3.An adult ticket for the cinema costs £12.80. A child ticket is half the price of an adult ticket. Mr and Mrs Smith and their six children go to see a movie. Mrs Smith has a voucher for 22% off. How much money does she save?

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.

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

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

# Calculate Percentage Change

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

Q1.An item was bought for £40 then sold for £50. The selling price was a percentage increase of 20%.

1/4

Q2.An item was bought for £40 then sold for £60. Find the percentage change.

2/4

Q3.An item was bought for £80 then sold for £50. Find the percentage change.

3/4

Q4.A clothes shop normally sells their goods at 80% above cost price. In a sale, the shop reduces the prices by 25%. What percentage profit does the shop make on clothes sold in the sale?

4/4

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

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

# Calculate Percentage Change

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

Q1.An item was bought for £40 then sold for £50. The selling price was a percentage increase of 20%.

1/4

Q2.An item was bought for £40 then sold for £60. Find the percentage change.

2/4

Q3.An item was bought for £80 then sold for £50. Find the percentage change.

3/4

Q4.A clothes shop normally sells their goods at 80% above cost price. In a sale, the shop reduces the prices by 25%. What percentage profit does the shop make on clothes sold in the sale?

4/4

# Lesson summary: Calculate Percentage Change

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga