Unit 8.1
Percentage
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Introduction
A percentage is a number expressed as a fraction of 100 in mathematics
Form
To express percentages, the sign used is %, although it can be written in a text as per cent.
Example
- 10% = 10 per cent = 10/100;
- 30% = 30 per cent = 30/100; etc.
- “Fifty per cent of Europeans…”
Use
Percentages are used:
- in formulaic expressions in subjects related to mathematics or physics;
- to talk about the fractions that are part of a hundred (30/100);
- at the start of a sentence in the extended form (per cent) to represent a number took from statistics.
Exercises
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