Applying LCM and HCF

In this lesson, we will answer problem solving questions involving determining the lowest common multiple and highest common factor of two integers. We will model solutions to a range of problems including worded questions.

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.

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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.Find 28 as the product of its prime factors.

1/4

Q2.True or False, Number A and B are 28 and 42?

2/4

Q3.What is the HCF of 28 and 42?

3/4

Q4.What is the HCF of 48 and 72?

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.

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.Find 28 as the product of its prime factors.

1/4

Q2.True or False, Number A and B are 28 and 42?

2/4

Q3.What is the HCF of 28 and 42?

3/4

Q4.What is the HCF of 48 and 72?

4/4

Video

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Worksheet

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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:

Applying LCM and HCF

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

Q1.Which number is missing from this prime factor tree?

1/4

Q2.There are 30 cups in a packet. There are 12 plates in a packet. Amir buys exactly the same number of cups and plates. What is the smallest number of each packet Amir can buy?

2/4

Q3.What is the smallest number of identical squares that will fit in this rectangle?

3/4

Q4.The HCF of two numbers is 6. If the LCM is 42 find the two numbers. You could use a Venn diagram to help. I've started this one for you . . . can you finish it?

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.

Unit quizzes are being retired in August 2023

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

Applying LCM and HCF

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

Q1.Which number is missing from this prime factor tree?

1/4

Q2.There are 30 cups in a packet. There are 12 plates in a packet. Amir buys exactly the same number of cups and plates. What is the smallest number of each packet Amir can buy?

2/4

Q3.What is the smallest number of identical squares that will fit in this rectangle?

3/4

Q4.The HCF of two numbers is 6. If the LCM is 42 find the two numbers. You could use a Venn diagram to help. I've started this one for you . . . can you finish it?

4/4

Lesson summary: Applying LCM and HCF

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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

This was the final lesson in the unit HCF and LCM.

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