MALT2006 Maths/Fractions Slide Show : Lesson 4Fractions Lesson 4Simplifying fractions

MALT2006 Maths/Fractions Slide Show : Lesson 4WALT : find an equivalent fraction which uses the lowest numbers.

MALT2006 Maths/Fractions Slide Show : Lesson 4Simplifying is like finding an equivalent fraction.

MALT2006 Maths/Fractions Slide Show : Lesson 4For example, lets think of an equivalent fraction for 6 10

MALT2006 Maths/Fractions Slide Show : Lesson 4So remember, what ever we do to the top number we must do to the bottom number. 6 10

MALT2006 Maths/Fractions Slide Show : Lesson 4So heres an equivalent fraction lets multiply top and bottom by 3.. 6 10

times 3

times 3 18 30

MALT2006 Maths/Fractions Slide Show : Lesson 4To simplify a fraction we must change it. 6 10 18 30

MALT2006 Maths/Fractions Slide Show : Lesson 4Change it to the smallest numbers possible. 6 10 18 30Oops, this is not using the smallest numbers . . . .

MALT2006 Maths/Fractions Slide Show : Lesson 4So lets try dividing. 6 10

MALT2006 Maths/Fractions Slide Show : Lesson 4But by what ? 6 10

MALT2006 Maths/Fractions Slide Show : Lesson 4So lets try dividing. 6 10

Divide by 2

Divide by 2

MALT2006 Maths/Fractions Slide Show : Lesson 4So lets try dividing. 6 10

Divide by 2

Divide by 2 3 5

MALT2006 Maths/Fractions Slide Show : Lesson 4Yes. We have simplified this fraction. 6 10 3 5

MALT2006 Maths/Fractions Slide Show : Lesson 4Heres another 8 14

MALT2006 Maths/Fractions Slide Show : Lesson 4Chat. Think. 8 14

MALT2006 Maths/Fractions Slide Show : Lesson 4Can we divide 8 and 14 by 5? 8 14 NO

MALT2006 Maths/Fractions Slide Show : Lesson 4Can we divide 8 and 14 by 7? 8 14 NO

MALT2006 Maths/Fractions Slide Show : Lesson 4Can we divide 8 and 14 by 2? 8 14 yes

MALT2006 Maths/Fractions Slide Show : Lesson 4Can we divide 8 and 14 by 2? 8 14

divide by 2divide by 247

MALT2006 Maths/Fractions Slide Show : Lesson 4And thats simplifying 8 14 47

MALT2006 Maths/Fractions Slide Show : Lesson 4Even when large numbers are involved, you still follow the same rules. 18 36

MALT2006 Maths/Fractions Slide Show : Lesson 4Even when large numbers are involved, you still follow the same rules. 18 36 Lets try dividing by 2Lets try dividing by 2 9 18

MALT2006 Maths/Fractions Slide Show : Lesson 4But were not there yet! 18 36 Lets try dividing by 2Lets try dividing by 2 9 18We can simplify further.We can make these numbers smaller

MALT2006 Maths/Fractions Slide Show : Lesson 4What can we divide9 and 18by? 18 36 Lets try dividing by 2Lets try dividing by 2 9 18

MALT2006 Maths/Fractions Slide Show : Lesson 4Guess and check . . . . 18 36 Lets try dividing by 2Lets try dividing by 2 9 18By 4 ?By 5 ?

MALT2006 Maths/Fractions Slide Show : Lesson 4Start with the top number itself. 18 36 Lets try dividing by 2Lets try dividing by 2 9 18Lets try dividing top and bottomby 9

MALT2006 Maths/Fractions Slide Show : Lesson 4Start with the top number itself. 18 36 Lets try dividing by 2Lets try dividing by 2 9 18Lets try dividing top and bottomby 9Lets try dividing by 9Lets try dividing by 9 1 2

MALT2006 Maths/Fractions Slide Show : Lesson 4It doesnt matter how many steps you take. 18 36 Lets try dividing by 2Lets try dividing by 2 9 18You keep dividing until you cant divide any more.Lets try dividing by 9Lets try dividing by 9 1 2

MALT2006 Maths/fractions Slide Show : Lesson 4Try these in your jotter 12 27 12 36 24 32 4 16 10 18 54 81 15 35 18 36 6 12 32 48 18 72 10 50 4 12 9 36 16 40(a)(o)(n)(m)(l)(k)(j)(i)(h)(g)(f)(e)(d)(c)(b)Simplify them

MALT2006 Maths/fractions Slide Show : Lesson 4answers 4 9 1 3 3 4 1 4 5 9 2 3 3 7 1 2 1 2 2 3 1 4 1 5 1 3 1 4 2 5(a)(o)(n)(m)(l)(k)(j)(i)(h)(g)(f)(e)(d)(c)(b)answers

MALT2006 Maths/Fractions Slide Show : Lesson 4Fractions Lesson 4Simplifying fractionsEnd of this lesson