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# Unit 5-Ratios, Decimals and Percentages

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## Brooke Cooney

on 12 June 2015

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#### Transcript of Unit 5-Ratios, Decimals and Percentages

Unit 5-Ratios,Decimals and Percentages
Proper Fractions
A proper fraction is a fraction that states how many pieces can make up a shape or solid object. So if you look at the image below it gives an example of of one fourth.The one is representing the shaded in quarter of the shape.And the four is representing how many in all.

Related fractions
By: Azhar Jamal,
Brooke Cooney,
Larissa Akins,
Jack Robinson
Improper Fractions
Ratios
By: Larissa Akins
By Brooke Cooney
Mixed Numbers
By: Azhar Jamal
A ratio is comparing objects and/or colors. An example of a ratios is shown below.
This ratio shows 5 girls to 15 boys. You can show it as 5:15, 5 to 15 or 5 over 15. Ratios are used to make part-to-part and part-to-whole comparisons.
Related fractions are:Ex
3x3 = 9 the related fraction would be 18/2 that would also = 9
Related fractions all have something in common
They all have the same answer
They can also sometimes be flipped around: EX 2+3=5 switch it around and you get the same answer

Mixed number is when you turn an improper fraction into a whole number like this:
12 is the improper fraction
5 you find something to
multiple 5 by something
which is smaller than 12.
Since 10 is smaller than 12
and is multiple of 5 because 5 x 2 = 10.
and 10 + 2 = 12 since 5 is the dinomintar the whole number has to be 2 because 5 x 2 = 10 and 2 must be the nominator because 10 + 2 = 12.

Notice how The top number is smaller, it is called the numerator.
The bottom number is called the denominator, it is always greater than the numerator.
12
5
2
2
5
x
=
+
Jack. R
An improper fraction is a fraction that states how many pieces in each solid and how many pieces all together. For example if you look at the image below you will see that it is the exact opposite of the proper fraction. The denominator can also be the same as the numerator. The seven is stating how many pieces, the four is stating how many pieces in the shape.
notice how the numerator is greater than the denominator
The numerator is always smaller or equal to the denominator.
By Larissa
Percentage is always out of 100.
These are examples of some percentages... In percentage questions you have a grid made of a number of cubes for example: The grid has a hundred cubes and 24 of them are colored or shaded in
that means that the percent is
24%
Percentages
5 x 2 = 10
10 + 2 = 12
=
formula
By: Azhar
There are some types of percents
which might be in a shape or for example like this square you would apply the same rules as a grid. You would count the number of squares. Since you know there are 100 squares in a grid you would divide 4 by 100 which gives you 25 because 25 x 4= 100, So each square is 25%
1
2
3
4
Another Type Of Percentage
By: Azhar
By: Azhar
Other Types Of Percent Styles You Might See
By: Azhar
For the different styles off percentages
you apply the same rule:
1. You would count the number of pieces or parts
2. Then you divide the number of pieces or parts to 100