2TH 7.1 100% and more

Welcome

Good to see you all!
Make sure you have got your notebook, pen 
and calculator in front of you!

1 / 23
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Slide 1: Tekstslide
WiskundeMiddelbare schoolhavoLeerjaar 2

In deze les zitten 23 slides, met interactieve quizzen en tekstslides.

Onderdelen in deze les

Welcome

Good to see you all!
Make sure you have got your notebook, pen 
and calculator in front of you!

Slide 1 - Tekstslide

Ch7 Exponential growth
Exponential growth
Growth factor
Standard notation
Constant graph
Ratio tabel
Factor
Exponential formula
Rising graph
Decreasing graph

Slide 2 - Tekstslide

What are we gone do today?

  • Explanation about 100% and more
  • Work independently (worksheet in Classroom)
  • Closing

Slide 3 - Tekstslide

What are you going to learn?
You will learn:
How to calculate in a ratio table with 
percentages higher than 100%

Slide 4 - Tekstslide

Calculating with percentages above 100%
 A mobile phone will cost €530 excluding VAT (btw) 
Calculate the price including 21% VAT. 

Step 1 Make a table and fill in the numbers.

530
%
100

Slide 5 - Tekstslide

Calculating with percentages above 100%
 A mobile phone will cost €530 excluding VAT (btw) 
Calculate the price including 21% VAT. 

Step 2 First go back to 1 and fill in the table on the bottom

530
%
100
1
121

Slide 6 - Tekstslide

Calculating with percentages above 100%
 A mobile phone will cost €530 excluding VAT (btw) 
Calculate the price including 21% VAT. 

Step 3 What you do on the bottom you also do above

530
641,30
%
100
1
121
530 : 100 x 121 = 641,3

Slide 7 - Tekstslide

Calculating with percentages above 100%
 A mobile phone will cost €530 excluding VAT (btw) 
Calculate the price including 21% VAT. 

Step 4 Write down your final answer

530
641,30
%
100
1
121
The price including VAT = 641,30

Slide 8 - Tekstslide

Calculating with percentages above 100%
A mobile phone costs €605 including VAT.  / costs €605 with a rise of 21%
Calculate the price excluding 21% VAT. / before the rise

Step 1 make a table and fill in the numbers

605
%
121

Slide 9 - Tekstslide

Calculating with percentages above 100%
A mobile phone costs €605 including VAT.  

Calculate the price excluding of 21% VAT.

Step 2 Calculate back to 1 to get to the number asked

605
500
%
121
1
100
605 : 121 x 100 = 500

Slide 10 - Tekstslide

Calculating with percentages above 100%
A mobile phone costs €605 including VAT.  

Calculate the price excluding of 21% VAT.

Step 3 Write down your final answer.

605
500
%
121
1
100
The price excluding VAT is € 500,- 

Slide 11 - Tekstslide

A chair costs €150 excluding VAT. Calculate the price including 21 % VAT.

Slide 12 - Open vraag

Calculating with percentages above 100%
A chair costs €150 excluding VAT. 
Calculate the price including 21 % VAT. 


150
181,5
%
100
1
121
150 : 100 x 121 =181,5

Including VAT the price is €181,50

Slide 13 - Tekstslide

A table costs €500 including VAT.
Calculate the price excluding 21% VAT.

Slide 14 - Open vraag

Calculating with percentages above 100%
A table costs €500 including VAT. 
Calculate the price excluding 21% VAT. 


500
413,22
%
121
1
100
500 : 121 x 100 =413,22

Excluding VAT the price is €413,22

Slide 15 - Tekstslide

Work independently
 - Go to Classroom. The worksheet shows 7 exercises. Do at least 5 of them.
 


Slide 16 - Tekstslide

Closing
You can calculate in a ratio table with percentage above 100%

Homework
Finish the exercises from the worksheet (see Classroom). 
We will discuss the exercises in the lesson on Tuesday.

Slide 17 - Tekstslide

Slide 18 - Tekstslide

Slide 19 - Tekstslide

Slide 20 - Tekstslide

Slide 21 - Tekstslide

Slide 22 - Tekstslide

Slide 23 - Tekstslide