Lycée Jean-Piaget - Neuchâtel
2016-2017
Percentages
1.Definition:
• A __________ with a denominator
_____________ is called a ______________.
2.Differenceinpercentage:
•
To calculate a __________________________, simply
divide the ___________ by the __________________
•
To get the proper sign:
• ___________________________________________________
3.Example:
A price goes from CHF 150.- to CHF 165.The percentage of increase is:
4.Evaluatingapercentagebetween2numbers:
• To evaluate a percentage simply _________ the 2
numbers, then _________________.
• Find the percentage of 5 with respect to 35:
5.Wordproblems:
• Translate:
o is / was / will be:
o after:
o before:
o discount:
Mathematics
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1MPES2
Chapter 1
Lycée Jean-Piaget - Neuchâtel
2016-2017
o increase:
__
• For instance:
o Price after discount:
______________________________________
o Price after increase:
______________________________________
o Price before discount:
______________________________________
o Price before increase:
______________________________________
6.Exercises:
• The price for pants is 53 CHF. What is the price
after a 20% discount?
• 73.10 CHF is the price after a 15% discount. What
was the original price?
• An item is sold 1’200 CHF. What is the price after a
13% increase?
• After an 8% increase, an item was sold for 1’350
CHF. What was the original price?
Mathematics
1MPES2
Chapter 1