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Calculations with Surds

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by

Mr Mattock

on 25 April 2016

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Transcript of Calculations with Surds

Calculations with Surds
Starter
Simplify

(a) 3a + 5a (b) 3 6 + 5 6

(c) 8b + b (d) 8 3 + 3

(e) 5x - y (f) 5 2 - 7

(g) 4p x 3p (h) 4 5 x 3 5
Activity
Examples
45 + 180
Starter
Simplify

(a) 3a + 5a
= 8a
(b) 3 6 + 5 6
= 8 6

(c) 8b + b
= 9b
(d) 8 3 + 3
= 9 3

(e) 5x - y (f) 5 2 - 7

(g) 4p x 3p
=12p
(h) 4 5 x 3 5
= 12 x 5
= 12 x 5 = 60
2
2
L.O. - To add, subtract and multiply with surds.
8
2
4 + 5 11 - (2 - 3 11)
5 3 x 2 3
Examples
45 + 180
8
2
4 + 5 11 - (2 - 3 11)
5 3 x 2 3
= 3 5 + 6 5 = 9 5
= 8
= 4 - 2 + 5 11 + 3 11
= 2 + 8 11
= 5 x 2 x 3 x 3 = 10 x 3 = 30
Activity
Complete the surd dominoes to show how they loop from Start to End.
Activities
Activity
Answers

Key
Examples

Worked
Example
Full transcript