Percentages

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Slide 1: Woordweb
EconomieMiddelbare schoolhavoLeerjaar 2

In deze les zitten 20 slides, met interactieve quizzen en tekstslides.

Onderdelen in deze les

Slide 1 - Woordweb

Answer these in your exercise books and then post a picture here H2a.
1. Duran says 'all goods are made'. Do you agree with him?
2. How do you calculate the income per capita of a country?
3. Write down one function of the Nederlandse Bank.
4. Complete: Coins and bank notes are examples of ________.

Slide 2 - Open vraag

What are percentages?

Slide 3 - Open vraag

A Primary Need
To compare the value of things that I can buy with 20E
The income per capita
These are examples of free goods
Food is
an example 
Using money as a calculating function
The average salary of an inhabitant of a country

Slide 4 - Sleepvraag

A student to read

Slide 5 - Tekstslide

With the formula

Slide 6 - Tekstslide

With the formula

Slide 7 - Tekstslide

Rosa has 15 Euro to spend. She spends 3.48 at Allday. What percentage of ther 15 Euros does she spend at Allday?

Slide 8 - Open vraag

7 student out of a class of 17 did not upload their maths homework yesteday. This make Mr Fisher sad.
What percentage DID upload their homework?

Slide 9 - Open vraag

Ratio Tables

Slide 10 - Tekstslide

Multipliers
To change a decimal into a percentage we need to...

Slide 11 - Tekstslide

What is 32% as a decimal
(Do 32/100)
A
32.0
B
0.32
C
0.23
D
0.33

Slide 12 - Quizvraag

What is 52% as a decimal H2a?
A
0.25
B
0.052
C
0.52
D
52.00

Slide 13 - Quizvraag

What is 7% as a decimal?
A
0.07
B
0.7
C
0.70
D
7.70

Slide 14 - Quizvraag

What is 23.7% as a decimal H2a?
A
32.7
B
0.237
C
0.327
D
0.2370

Slide 15 - Quizvraag

What is 423% as a decimal?
A
0.423
B
4.32
C
4.23
D
1.23

Slide 16 - Quizvraag

Multipler ('perunage')
Change the PERCENTAGE to a decimal by dividing by 100 and then multiply them together

Examples    34% of 56 is 0.34 x 56 = 19.04
7% of 61 is 0.07 x 61 = 4.27
70% of 56 Euros is 0.70 x 56 = 39.2 so 39.20 Euros

Slide 17 - Tekstslide

An online lesson is 50 minutes long and students can concentrate in chunks of 12 minutes. For what percentage of a lesson can students concentrate? 
12% of 50 minutes 
- Formula

- Ratio table



- Perunage (% into a decimal and multiply)

Slide 18 - Tekstslide

So you have three methods to choose from
- Formula
- Ratio table
- Perunage (% into a decimal and multiply)

Slide 19 - Tekstslide

Your go...
Keywords: from students

Task: Percentages 1 questions on page 20 

Slide 20 - Tekstslide