# Prime Building Blocks

In this lesson, we will "build" numbers by considering their products and factors. We will also rewrite numbers as a product of factors in different ways.

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.Evaluate the following:

1/5

Q2.Evaluate the following:

2/5

Q3.Which is larger?

3/5

Q4.Which is larger?

4/5

Q5.Which of these could not be a value of b?

5/5

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.Evaluate the following:

1/5

Q2.Evaluate the following:

2/5

Q3.Which is larger?

3/5

Q4.Which is larger?

4/5

Q5.Which of these could not be a value of b?

5/5

# 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:

# Prime Building Blocks

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 numbers is not prime?

1/5

Q2.Which of these numbers is prime?

2/5

Q3.Which of these is the prime factorisation of 30?

3/5

Q4.Which of these is the prime factorisation of 50?

4/5

Q5.What is the final digit for this number:

5/5

Quiz:

# Prime Building Blocks

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 numbers is not prime?

1/5

Q2.Which of these numbers is prime?

2/5

Q3.Which of these is the prime factorisation of 30?

3/5

Q4.Which of these is the prime factorisation of 50?

4/5

Q5.What is the final digit for this number:

5/5

# Lesson summary: Prime Building Blocks

## 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