Topic 1.4 Percentages - 1

• Economie
• Middelbare school
• vwo
• Leerjaar 2

Topic 1

Percentages - 1

Agenda

• Discuss Homework
• Explanation Topic 1.4
• Get to work! (LessonUp and tasks Enough Choice!)

Discuss Homework

Learning goals

You will learn three different ways to calculate with percentages: table, formula or perunage

Calculating Percentages

There are three ways to calculate percentages: 

• Use a table
• Formula 
• Perunage

A table

A table

A table

A table

Formula

Part (or amount) / 100 x percentage

1492 / 100 x 28 = 418 students

Perunage

 Perunage = percentage : 100

Answer: 

28 : 100 = 0,28

0,28 x 1492 = 418

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Mirjam has bought a TV at the MediaMarkt. Normally the price is € 499.99. She got a 10% discount. What is the amount of discount that Mirjam received? Round off to two decimal places.

Joost has a parttime job and earns € 65 per week. Per week he saves 25% of his earned money. How much money does Joost have left to do fun things? Round off to two decimal places.

Barry earns € 8.45 per hour. He is getting a raise of 15%. How many euros is Barry going to earn more per hour after his raise? Round off to two decimal places.

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