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# Fractions, Decimals and Percentages

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## Rebecca Sullivan

on 8 November 2013

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#### Transcript of Fractions, Decimals and Percentages

Fractions
Results
Practice
Fractions, Decimals and Percentages
Notes
What is a fraction?
The pizza is one whole, each slice
is a fraction of the whole pizza.
Fractions
When looking at a fraction, the line that separates the numerator and denominator can be replaced by the words 'out of'.
The fraction that represents the amount of pizza that Marie has eaten is 2/8
Use a calculator
Converting percentages to decimals:
10% = 0.10
25% = 0.25
50% = 0.50
What patterns do you see?
Converting percentages to decimals
Use your patterns to predict the decimal forms of these percentages:
75%, 20%, 33%
Did you see the pattern?
To convert a percentage to a decimal you just need to move the decimal, two places to the left.
Finished
For further information on fractions, decimals and percentages, please refer to your Revision Workbook
Marie has eaten 2 out of a possible 8 slices
Converting fractions into percentages
First, write down the fraction that you want to convert.
For example: 2/8
Try converting these
A) 1/4

B) 1/10

C) 3/5

D) 2/3
A = 1/4 = 25%
B = 1/10 = 10%
C = 3/5 = 60%
D = 2/3 = 66%
If Marie eats 2 slices of pizza, what fraction of the pizza did she eat?
100 divided by 8 = 12.5

12.5 multiplied by 2 = 25

Your fraction has now been converted into a percentage.
2/8 converted to a percentage = 25%