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PERCENTAGES
PERCENTAGES
PERCENTAGES
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Slide 1:
Tekstslide
Mathematics
Further Education (Key Stage 5)
In deze les zitten
14 slides
, met
interactieve quizzen
en
tekstslides
.
Lesduur is:
60 min
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PERCENTAGES
PERCENTAGES
Slide 1 - Tekstslide
Percentages are just fractions written out of 100.
Eg 30% =
1
0
0
3
0
Per means out of and cent means 100
Slide 2 - Tekstslide
Where do you see percentages day to day?
Slide 3 - Open vraag
Remember that........
Slide 4 - Tekstslide
There are various ways to find a percentage of an amount, however with a calculator, this is an easy method:
Divide the amount by 100 to find 1%
Then multiply your answer by the percentage you want
Slide 5 - Tekstslide
Try these:
What is 32% of £500?
What is 15% of £225?
What is 65% of £300?
What is 12% of 40?
What is 2% of 200?
Slide 6 - Tekstslide
Jack's teacher says that 85% of the class passed their Maths exam. How many students is this if there are 40 people in the class?
Slide 7 - Open vraag
Percentage change is when you work out the percentage but you then add it or subtract it from what you started with.........
You bought a mobile phone last year for £800. This year there is a discount of 20%. What does your phone cost this year?
Slide 8 - Tekstslide
JD Sports have increased the price of their Nike joggers by 15% this year. If last year they cost £50, what is the cost this year?
Slide 9 - Open vraag
What is 30% of £600?
A
£300
B
£200
C
£150
D
£180
Slide 10 - Quizvraag
What is 15% of 225m
A
25.5m
B
33.75m
C
30m
D
28.75m
Slide 11 - Quizvraag
Alex bought a car last year for £8000. This year the car is worth 20% less. What is the car worth this year?
A
£6400
B
£1600
C
£7000
D
£9600
Slide 12 - Quizvraag
The cost of a flight with Easyjet has increased by 5% this year. Last year I flew to Salou for £300. How much will I pay this year?
A
£305
B
£350
C
£315
D
£335
Slide 13 - Quizvraag
Amy got 75% of her questions right in a test. If there were 60 questions, how many did she get wrong?
A
45
B
15
C
40
D
50
Slide 14 - Quizvraag
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