% change

% Increase, Decrease & Change
1 / 26
next
Slide 1: Slide
MathematicsPrimary Education

This lesson contains 26 slides, with interactive quizzes and text slide.

time-iconLesson duration is: 18 min

Items in this lesson

% Increase, Decrease & Change

Slide 1 - Slide

what is 10% of 400?
A
44
B
40
C
50%
D
10

Slide 2 - Quiz

what is 1/5 of 400?
A
80
B
40
C
50
D
480

Slide 3 - Quiz

what is 15% of 400?
A
44
B
40
C
60
D
10

Slide 4 - Quiz

what is 3/5 of 400?
A
80
B
240
C
50
D
480

Slide 5 - Quiz

Make up your own equivalent
so example:
35% = 0.35 = 35/100

Slide 6 - Mind map

Make up your own equivalent
so example:
5% = 0.05 = 5/100

Slide 7 - Mind map

Make up your own equivalent
so example:
145% = 1.45 = 145/100

Slide 8 - Mind map

Increase 50 by 10% ?
A
55
B
50
C
50%
D
49

Slide 9 - Quiz

Increase 70 by 10% ?
A
55
B
7.7
C
50%
D
77

Slide 10 - Quiz

Increase 500 by 10% ?
A
545
B
550
C
50%
D
490

Slide 11 - Quiz

Decrease 50 by 10% ?
A
50
B
40
C
50%
D
45

Slide 12 - Quiz

Decrease 500 by 10% ?
A
50
B
400
C
50%
D
450

Slide 13 - Quiz

Decrease 50 by 1% ?
A
55
B
450
C
49
D
49.5

Slide 14 - Quiz

Decrease 500 by 1% ?
A
500
B
400
C
495
D
450

Slide 15 - Quiz

Increase 93 by 10% ?
A
9.3
B
837
C
102.3
D
83.7

Slide 16 - Quiz

Decrease 93 by 10% ?
A
9.3
B
837
C
102.3
D
83.7

Slide 17 - Quiz

Increase 123 by 50% ?
A
61.5
B
837
C
123.5
D
184.5

Slide 18 - Quiz

Decrease 123 by 50% ?
A
61.5
B
837
C
102.3
D
184.5

Slide 19 - Quiz

During Covid-19 a car price went up by 40% from £480, Find the new price of the car?
A
6720
B
67.2
C
670
D
672

Slide 20 - Quiz

During Covid-19 a car price down up by 40% from £480, Find the new price of the car?
A
2.88
B
480
C
288
D
192

Slide 21 - Quiz

Emma buys a coat for £80
She gets 30% discount
Calculate the selling price ?
A
104
B
56
C
70%
D
50

Slide 22 - Quiz

Emma buys a coat for £80
She the sell it for 30% more
Calculate the selling price ?
A
104
B
56
C
70%
D
50

Slide 23 - Quiz

Find the discounted price of a bag being sold for £48 in a 40% off sale
A
67.20
B
28
C
20.80
D
28.8

Slide 24 - Quiz

Emma buys a house for £201 500
She sells the house for £213 590
Calculate the percentage profit Emma makes. ?
A
6%
B
0,6
C
66%
D
60%

Slide 25 - Quiz

Emma buys a house for £201 500
She sells the house for £213 590
Calculate the percentage profit Emma makes. ?
A
6%
B
0,6
C
66%
D
60%

Slide 26 - Quiz