Applying LCM and HCF

A lesson with problem solving questions involving LCM and HCF.

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!

Question 1

Question 2

Question 3

Question 4

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.

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!

Question 1

Question 2

Question 3

Question 4

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

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:

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.

Question 1

Question 2

Question 3

Question 4

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.

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.

Question 1

Question 2

Question 3

Question 4

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

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