# Percentages 1

Percentages 1
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Slide 1: Slide
MathematicsUpper Secondary (Key Stage 4)GCSE

This lesson contains 48 slides, with interactive quizzes and text slides.

## Items in this lesson

Percentages 1

#### Slide 1 -Slide

If the exchange rate from pounds to euros is 1:1.2, how many euros do you get for £150?
A
120 euros
B
160 euros
C
180 euros
D
130 euros

#### Slide 2 -Quiz

If you exchange £200 for dollars at a rate of 1:1.3, how much would you get in dollars?
A
$260 B$220
C
$240 D$180

#### Slide 3 -Quiz

What's in a....?
The next few questions are about measurements (hrs, meters, litres...)

#### Slide 4 -Slide

How many hours are in a day?
A
12 hrs
B
24 hrs
C
60 hrs
D
10 hrs

#### Slide 5 -Quiz

How many centimeters are in a meter?
A
50 cm
B
100 cm
C
200 cm
D
10 cm

#### Slide 6 -Quiz

How many minutes in 1hr?
A
100 mins
B
10 mins
C
12 mins
D
60 mins

#### Slide 7 -Quiz

How many milliliters are in a liter?
A
500 ml
B
1000 ml
C
250 ml
D
2000 ml

#### Slide 8 -Quiz

How many pennies in a pound?
A
50 cm
B
100 cm
C
200 cm
D
10 cm

#### Slide 9 -Quiz

How many grams are in a kilogram?
A
250 g
B
2000 g
C
1000 g
D
500 g

#### Slide 10 -Quiz

How much of a day is 12 hours?

#### Slide 11 -Slide

How much of a day is 12 hours?
How much of £1 is 20p?

6 Questions

#### Slide 13 -Slide

How much of an hour is 15mins?
A
41
B
21
C
51
D
31

#### Slide 14 -Quiz

How much of an hour is 20mins?
A
41
B
21
C
51
D
31

#### Slide 15 -Quiz

How much of an hour is 30mins?
A
41
B
21
C
51
D
31

#### Slide 16 -Quiz

How much of an hour is 12mins?
A
41
B
21
C
51
D
31

#### Slide 17 -Quiz

How much of an hour is 45mins?
A
43
B
21
C
53
D
32

#### Slide 18 -Quiz

How much of an hour is 40mins?
A
43
B
21
C
53
D
32

#### Slide 19 -Quiz

One thing as a Percentage of another
What percentage of an hour is 30mins?
What percentage of an hour is 15mins?
What percentage of an hour is 45mins?
What percentage of an hour is 20mins?
What percentage of an hour is 12mins?
What percentage of an hour is 5mins?
Example

#### Slide 20 -Slide

One thing as a Percentage of another
What percentage of an hour is 30mins? = 30/60 *100 = 50%
What percentage of an hour is 15mins? = 30/60 *100 = 25%
What percentage of an hour is 45mins? = 30/60 *100 = 75%
What percentage of an hour is 20mins? = 20/60 *100 = 33.3%
What percentage of an hour is 12mins? = 12/60 *100 = 20%
What percentage of an hour is 5mins? = 5/60 *100 = 8.3%

7 Questions

#### Slide 22 -Slide

What percentage of £1 is 40p?

#### Slide 23 -Open question

What percentage of £1 is 65p?

#### Slide 24 -Open question

What percentage of £5 is 50p?

#### Slide 25 -Open question

What percentage of £5 is £1.50?

#### Slide 26 -Open question

What percentage of £5 is £3.50?

#### Slide 27 -Open question

What percentage of £5 is £2.25?

#### Slide 28 -Open question

What percentage of £5 is £1.55?

#### Slide 29 -Open question

One thing as a Percentage of another
What percentage of a day is 6hrs?
What percentage of a day is 18hrs?
What percentage of a day is 3hrs?
What percentage of a km is 800m?
What percentage of a km is 965m?
What percentage of 400m is 365m?

#### Slide 30 -Slide

One thing as a Percentage of another
What percentage of a day is 6hrs? = 6/24 *100 = 25%
What percentage of a day is 18hrs? = 18/24 *100 = 75%
What percentage of a day is 3hrs? = 3/24 *100 = 12.5%
What percentage of a km is 800m? = 800/1000= 80/100 = 80%
What percentage of a km is 965m?=965/1000 =96.5/100 =96.5%
What percentage of 400m is 365m? = 365/400 *100 = 91.25%

#### Slide 31 -Slide

Percentages 2 Profit / Loss

How do we calculate the percentage change?

5 questions - Are you Ready?

#### Slide 32 -Slide

What is 10% of 350?
A
50
B
25
C
35
D
40

Find 25% of 80.
A
40
B
30
C
15
D
20

#### Slide 34 -Quiz

Calculate 20% of 150.
A
40
B
30
C
50
D
25

#### Slide 35 -Quiz

Determine 5% of 400.
A
30
B
20
C
15
D
40

#### Slide 36 -Quiz

What is 15% of 200?
A
40
B
30
C
25
D
50

#### Slide 37 -Quiz

Profit/loss
Pia brought a new Jumper for £30, a year later she sold it on Vinted for £20.
What was her percentage loss?

#### Slide 38 -Slide

Profit/loss
Ana brought a car for £30,000, 5 years later she sold it for £22,000.
What was the percentage loss of value on the car?

#### Slide 39 -Slide

Profit/loss
Rosie brought a pair of Jimmy Choo shoes in the sale for £150.
Then she sold them for £185.
What was her percentage profit?

#### Slide 40 -Slide

Profit/loss
Honor brought a Large pack of Haribo for £2.50.
She repackaged them into 10 small sweetie bags and sold them for 50p each.
What was Honor's percentage profit?

#### Slide 41 -Slide

A company bought a product for $200 and sold it for$250. What is the percentage profit?
A
30%
B
15%
C
20%
D
25%

#### Slide 42 -Quiz

If a bike is bought for $300 and sold for$240, what is the percentage loss?
A
15%
B
30%
C
20%
D
25%

#### Slide 43 -Quiz

A shopkeeper sells a shirt for $40 which he bought for$30. What is the percentage profit?
A
40%
B
20%
C
25%
D
33.33%

#### Slide 44 -Quiz

A phone was bought for $500 and sold for$600. What is the percentage profit?
A
25%
B
20%
C
15%
D
30%

#### Slide 45 -Quiz

If a book is bought for $80 and sold for$64, what is the percentage loss?
A
25%
B
20%
C
30%
D
15%

#### Slide 47 -Slide

Mrs Jones buys a bag of 18 lollies for £2.
She sells the lollies for 20p each.
What percentage profit did she make?