# Rationalising Surds (Part 2)

In this lesson, we will learn how to rationalise a fraction containing more complex expressions with surds in the denominator.

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.Rationalise 2 ÷√2

1/4

Q2.Rationalise

2/4

Q3.Rationalise

3/4

Q4.Rationalise

4/4

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.Rationalise 2 ÷√2

1/4

Q2.Rationalise

2/4

Q3.Rationalise

3/4

Q4.Rationalise

4/4

# 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:

# Rationalising Surds (2)

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

Q1.The conjugate of (√2 +3) is (√2 – 3)

1/4

Q2.Expanding (√2 +3)(√2 – 3) will find an integer answer.

2/4

Q3.Rationalise

3/4

Q4.Rationalise

4/4

Quiz:

# Rationalising Surds (2)

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

Q1.The conjugate of (√2 +3) is (√2 – 3)

1/4

Q2.Expanding (√2 +3)(√2 – 3) will find an integer answer.

2/4

Q3.Rationalise

3/4

Q4.Rationalise

4/4

# Lesson summary: Rationalising Surds (Part 2)

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Walk

On the spot:
Dance