Prime Factor Decomposition

In this lesson, we will revisit the concept of using factor trees to rewrite a number as a product of its prime factors.

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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.True or False, three of these numbers are prime and more than 20.

1/5

Q2.Which number lies in the intersection (middle) of this Venn diagram?

2/5

Q3.How many of the factors of 39 are prime numbers?

3/5

Q4.Which two prime numbers sum to 40?

4/5

Q5.The product of which two prime numbers find another prime number?

5/5

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.True or False, three of these numbers are prime and more than 20.

1/5

Q2.Which number lies in the intersection (middle) of this Venn diagram?

2/5

Q3.How many of the factors of 39 are prime numbers?

3/5

Q4.Which two prime numbers sum to 40?

4/5

Q5.The product of which two prime numbers find another prime number?

5/5

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:

Prime Factor Decomposition

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

Q1.Q1) Write 4 x 14 as a product of prime factors.

1/4

Q2.Which number is missing from this diagram?

2/4

Q3.Write 300 as the product of prime factors in index form.

3/4

Q4.Find the missing number/s.

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:

Prime Factor Decomposition

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

Q1.Q1) Write 4 x 14 as a product of prime factors.

1/4

Q2.Which number is missing from this diagram?

2/4

Q3.Write 300 as the product of prime factors in index form.

3/4

Q4.Find the missing number/s.

4/4

Lesson summary: Prime Factor Decomposition

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