Year 9

Year 9

# Manipulating surds

## Lesson details

### Key learning points

1. In this lesson, we will look at basic surd rules in particular multiplication and division.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Starter quiz

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### 7 Questions

Q1.
Which of the following is a surd
A
C
D
Q2.
Which of the following is NOT a surd
Option 1
B
C
Q3.
Evaluate √144
1.44
72
Q4.
A right- angled triangle has sides a, b and c as show in the diagram. What is the correct formula to find the length a.
A
B
C
Q5.
A right- angled triangle is shown in the diagram below. Find the length of the hypotenuse.
116
14
28
Q6.
A right- angled triangle is shown int he diagram below. Find the length of the missing side.
√135
√33
153
Q7.
A right- angled triangle is shown int he diagram below. Find the length of the missing side.
√146
36
96

## Exit quiz

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### 5 Questions

Q1.
Work out √16
2
8
Q2.
Which of the following is NOT equivalent to 2 × √9
2√9
6
Q3.
What is √4×√4
16