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maths revision: fractions

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simple adding fractions

adding fractions is easy once you know the wright method.

you must make sure the denominator is the same for both fractions

an easy question would be

6/12 + 4/12 = 10/12

or simplified

10/12 = 5/6

all you do for a question like this is add the nominators then if both the denominator and nominator are even half them as shown above.


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complex adding fractions

complex adding fractions is multiplying the denominators on a question so they are the same   (but what ever you multiply to get the denominator you multiply the nominator)

for example:  2/2 + 5/1

the denominators are 2 and 1

so the the first multiple that is in the 1 and 2 times tables is 2

so the first fraction stays the same

but the second fraction is times by 2

so the new fraction is

2/2 +10/2

now all you do is add 2 and 10 together

which is a top heavy fraction at  12/2 now you can simlife this and it will be

6/1

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simple taking away fraction

simple taking away fractions is basically the same process as adding

you must make sure the denominators are the same

for example 6/5 - 2/5

just do 6 - 2 which equals 4

then put the denominator under the 4

4/5

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complex taking away fractions

complex taking away fractions is agina like adding fractions

for example 2/2 - 5/1

the denominators are 2 and 1

so the first multiple that are in the 1 and 2 times tables is 2

so the first fraction stays the same

but the second fraction is times by 2

so the new fraction is

2/2 - 10/2

now all you do is take away 2 from 10

which = 8/2

simplyified this is 4/1

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