Simple Interest

In this lesson, we will learn about calculating simple interest. We will investigate what the term means, and learn how to calculate it and solve problems.

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.

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.If 20% of a number is 32, find 100%

1/4

Q2.If 7% of a number is 14, find 100%

2/4

Q3.A shop has a sale with 10% discount on all items. If a coat costs £45 in the sale. What was its original price?

3/4

Q4.Tim is a car salesman. He bought a car for £5000. Currently he is holding a sale with 35% off the price of all cars. Tim wants to sell the car so that he makes a 10% profit on the price he paid. How much should Tim advertise the car for?

4/4

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.

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.If 20% of a number is 32, find 100%

1/4

Q2.If 7% of a number is 14, find 100%

2/4

Q3.A shop has a sale with 10% discount on all items. If a coat costs £45 in the sale. What was its original price?

3/4

Q4.Tim is a car salesman. He bought a car for £5000. Currently he is holding a sale with 35% off the price of all cars. Tim wants to sell the car so that he makes a 10% profit on the price he paid. How much should Tim advertise the car for?

4/4

Video

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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.

Quiz:

Simple interest

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

Q1.£7000 is invested at 6% simple interest. How much interest will be earned in 4 years?

1/3

Q2.£2000 is invested at 3.5% simple interest. How much will the investment be worth after 5 years?

2/3

Q3.A Fitness instructor wants to earn £500 in interest over the next two years. If they can invest their money at 7% per annum, how much do they need to invest to earn the £500?

3/3

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.

Quiz:

Simple interest

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

Q1.£7000 is invested at 6% simple interest. How much interest will be earned in 4 years?

1/3

Q2.£2000 is invested at 3.5% simple interest. How much will the investment be worth after 5 years?

2/3

Q3.A Fitness instructor wants to earn £500 in interest over the next two years. If they can invest their money at 7% per annum, how much do they need to invest to earn the £500?

3/3

Lesson summary: Simple Interest

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Time to move!

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For 5 mins...

Move around:
Jog

On the spot:
Dance

This was the final lesson in the unit Percentage increase and decrease.

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