Percentage is a fraction whose denominator is 100.
E.g.  = 25%
E.g.  of the pupils
participated in the Australian Mathematics Competition. How many percent of the whole
class participated in the Australian Mathematics Competition?
Method (A)
 | Change the denominator into 100. |
Percent of whole class who participated in the Australian
Mathematics Competition =
= 
= 48%
Method (B)
| Multiply the faction by 100%. (More efficient!) |
Percent of whole class who participated in the
Australian Mathematics Competition = x 100%
= 48%
E.g.  of the pupils
participated in the Projects’ Day. What fraction of the whole class participated in
the Projects’ Day?
Fraction of the class which participated in the
Projects’ Day = / 100
=  x 
= 
Percentage of the teachers who participated in the
Teachers’ Debate
= 0.35 x 100%
= 35%
| Section (IV):
Converting percentage into decimal.
 | Divide the percentage by 100 and convert the answer into a
decimal. |
|
E.g. Convert  into decimal.
=  x 100%
= 61.25 x 100%
= 0.6125
That's the end of the review on percentages. Hope that you
have refreshed your memory!
|
