1TTO §8.6 Calculating with percentages.


Some explanations and a few tasks for you too!
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Slide 1: Tekstslide
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In deze les zitten 18 slides, met interactieve quizzen en tekstslides.

time-iconLesduur is: 30 min

Onderdelen in deze les


Some explanations and a few tasks for you too!

Slide 1 - Tekstslide


Some explanations and a few tasks for you too!

Slide 2 - Tekstslide

Dagopening:

Slide 3 - Tekstslide

Slide 4 - Tekstslide

Slide 5 - Tekstslide

Slide 6 - Tekstslide

Slide 7 - Tekstslide

write 33 % as a fraction

Slide 8 - Woordweb

explanation:
33 %  is  33 of 100, so  it is:

10033

Slide 9 - Tekstslide

write as a percentage:
A difficult one!
Think about it!
Next slide explains.

Slide 10 - Tekstslide

written as a percentage:
This is the same as :
82 x 4     divided by        4 x 250 = 1000,  so it is
, which is the same as                               , so it is:
32.8 % 

25082
1000328
10032.8

Slide 11 - Tekstslide

The final exercise is about the relations between
decimal numbers, percentages and fractions.

Slide 12 - Tekstslide

Write 92.5 % as a decimal number:
A
9.25
B
92.5
C
0.925
D
0.93

Slide 13 - Quizvraag

Explanation:
92.5 %  is the same as 92.5 of 100, or:
0.925
The method here is: 
from a percentage to a decimal number means replacing the point
two places to the left! Just like: 25 % is 0.25

Slide 14 - Tekstslide

Homework time
Make §8.6 now: 47, 48, 50, 51, 52 & 53.
Check your answers well!!

Slide 15 - Tekstslide

Slide 16 - Tekstslide

Slide 17 - Tekstslide

Photo of HW

Slide 18 - Open vraag