# 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
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.

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.

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.