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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Fractions Lesson 4 Simplifying fractions

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 WALT : find an equivalent fraction which uses the lowest numbers.

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Simplifying is like finding an equivalent fraction.

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 For example, lets think of an equivalent fraction for …… 6 10

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 So remember, what ever we do to the top number we must do to the bottom number. 6 10

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 So heres an equivalent fraction…… lets multiply top and bottom by 3… times 3 times

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 To simplify a fraction we must change it

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Change it to the smallest numbers possible Oops, this is not using the smallest numbers....

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 So lets try dividing. 6 10

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 But by what ? 6 10

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 So lets try dividing Divide by 2 Divide by 2

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 So lets try dividing Divide by 2 Divide by 2 3 5

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Yes. We have simplified this fraction

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Heres another 8 14

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Chat. Think. 8 14

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Can we divide 8 and 14 by 5? 8 14 NO

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Can we divide 8 and 14 by 7? 8 14 NO

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Can we divide 8 and 14 by 2? 8 14 yes

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Can we divide 8 and 14 by 2? 8 14 divide by 2 divide by 2 4 7

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 And thats simplifying

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Even when large numbers are involved, you still follow the same rules

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Even when large numbers are involved, you still follow the same rules Lets try dividing by

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 But were not there yet! Lets try dividing by We can simplify further. We can make these numbers smaller

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 What can we divide 9 and 18 by? Lets try dividing by

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Guess and check Lets try dividing by By 4 ? By 5 ?

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Start with the top number itself Lets try dividing by Lets try dividing top and bottom by 9

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Start with the top number itself Lets try dividing by Lets try dividing top and bottom by 9 Lets try dividing by 9 1 2

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 It doesnt matter how many steps you take Lets try dividing by You keep dividing until you cant divide any more. Lets try dividing by 9 1 2

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MALT©2006 Maths/fractions Slide Show : Lesson 4 Try these in your jotter (a) (o)(n)(m)(l)(k) (j)(i)(h)(g)(f) (e)(d)(c)(b) Simplify them

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MALT©2006 Maths/fractions Slide Show : Lesson 4 answers (a) (o)(n)(m)(l)(k) (j)(i)(h)(g)(f) (e)(d)(c)(b) answers

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MALT©2006 Maths/Fractions Slide Show : Lesson 4 Fractions Lesson 4 Simplifying fractions End of this lesson

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