# Identify properties of numbers

In this lesson, we will learn to identify prime and composite numbers.

#### 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.Which number from the list is a factor of 14?

1/5

Q2.Which of the below is a common factor of 48 and 18?

2/5

Q3.What is the highest common factor of 12 and 30?

3/5

Q4.Which number from the list below is a multiple of 6?

4/5

Q5.Which of the numbers below is a multiple of 20 between 50 and 99?

5/5

#### 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.Which number from the list is a factor of 14?

1/5

Q2.Which of the below is a common factor of 48 and 18?

2/5

Q3.What is the highest common factor of 12 and 30?

3/5

Q4.Which number from the list below is a multiple of 6?

4/5

Q5.Which of the numbers below is a multiple of 20 between 50 and 99?

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.

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

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

# Identify properties of numbers

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

Q1.Which of the below is the definition of a prime number?

1/4

Q2.Which of the below is not a prime number?

2/4

Q3.How many prime numbers are there between 10 and 20?

3/4

Q4.What is the largest prime number under 100?

4/4

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

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

# Identify properties of numbers

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

Q1.Which of the below is the definition of a prime number?

1/4

Q2.Which of the below is not a prime number?

2/4

Q3.How many prime numbers are there between 10 and 20?

3/4

Q4.What is the largest prime number under 100?

4/4

# Lesson summary: Identify properties of numbers

## 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