# Introduction to Surds

In this lesson, we will learn what a surd is and we will explore how to accurately estimate the value of a surd.

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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.All integers are rational numbers

1/7

Q2.Recurring decimals such as 0.3333.... are considered as irrational numbers.

2/7

Q3.Which of these is an irrational number?

3/7

Q4.Which of these is an irrational number?

4/7

Q5.All rational numbers can be written as a fraction.

5/7

Q6.The square root of all square numbers are irrational numbers.

6/7

Q7.Which of these is a rational number?

7/7

#### 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.All integers are rational numbers

1/7

Q2.Recurring decimals such as 0.3333.... are considered as irrational numbers.

2/7

Q3.Which of these is an irrational number?

3/7

Q4.Which of these is an irrational number?

4/7

Q5.All rational numbers can be written as a fraction.

5/7

Q6.The square root of all square numbers are irrational numbers.

6/7

Q7.Which of these is a rational number?

7/7

# 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.

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

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

# Introduction to surds Quiz

Exit Quiz

Q1.√9 is a surd

1/6

Q2.Which of the following is a surd

2/6

Q3.Which on the following is NOT a surd

3/6

Q4.Which of the following is a surd?

4/6

Q5.Evaluate √49

5/6

Q6.Estimate √57

6/6

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

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

# Introduction to surds Quiz

Exit Quiz

Q1.√9 is a surd

1/6

Q2.Which of the following is a surd

2/6

Q3.Which on the following is NOT a surd

3/6

Q4.Which of the following is a surd?

4/6

Q5.Evaluate √49

5/6

Q6.Estimate √57

6/6

# Lesson summary: Introduction to Surds

## 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