1. Percentage – Increase & Decrease – Foundation – GCSE Questions
These questions are the same format as previous GCSE exams.
COPY means they use the exact same numbers as the original GCSE question.
Otherwise, they are clone questions using different numbers.
The worksheets are provided in a variety of sizes.

2. Printing To print handouts from slides -
Select the slide from the left. Then click:
File > Print > ‘Print Current Slide’
To print multiple slides -
Click on a section title to highlight all those slides,
or press ‘Ctrl’ at the same time as selecting slides to
highlight more than one. Then click:
File > Print > ‘Print Selection’
To print double-sided handouts -
Highlight both slides before using ‘Print Selection’.
Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

3. GCSE GCSE Edexcel Foundation: November 2017 Paper 1, Q16
Pavlov wants to buy 45 hats.
Each hat costs £4.60
Pavlov does the calculation 50 x 5 = 250 to estimate the cost of 45 hats.
Explain how Pavlov’s calculation shows the actual cost will
be less than £250.
There is a special offer.
(b) Work out the actual cost of buying 45 hats using the special offer. 1
Pavlov wants to buy 45 hats.
Each hat costs £4.60
Pavlov does the calculation 50 x 5 = 250 to estimate the cost of 45 hats.
Explain how Pavlov’s calculation shows the actual cost will
be less than £250.
There is a special offer.
(b) Work out the actual cost of buying 45 hats using the special offer.
(1)
(1)
Hats £4.60 each.
Buy 40 or more hats,
Get 10% off the total cost.
Hats £4.60 each.
Buy 40 or more hats,
Get 10% off the total cost.
(4)
(4)
(Total for Question 1 is 5 marks)
(Total for Question 1 is 5 marks)

5. GCSE GCSE GCSE GCSE Edexcel Foundation: May 2017 Paper 1, Q20
Adrian is paid £1600 per month.
He is going to get a 4% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase. 1
Adrian is paid £1600 per month.
He is going to get a 4% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase.
(Total for Question 1 is 2 marks)
(Total for Question 1 is 2 marks) 2
Sally is paid £1300 per month.
She is going to get a 3% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase. 2
Sally is paid £1300 per month.
She is going to get a 3% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase.
(Total for Question 2 is 2 marks)
(Total for Question 2 is 2 marks)
GCSE
GCSE
Edexcel Foundation: May 2017 Paper 1, Q20
Edexcel Foundation: May 2017 Paper 1, Q20 1
Adrian is paid £1600 per month.
He is going to get a 4% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase. 1
Adrian is paid £1600 per month.
He is going to get a 4% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase.
(Total for Question 1 is 2 marks)
(Total for Question 1 is 2 marks) 2
Sally is paid £1300 per month.
She is going to get a 3% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase. 2
Sally is paid £1300 per month.
She is going to get a 3% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase.
(Total for Question 2 is 2 marks)
(Total for Question 2 is 2 marks)

7. GCSE Edexcel Foundation: November 2017 Paper 1, Q16
Pavlov wants to buy 45 hats.
Each hat costs £4.60
Pavlov does the calculation 50 x 5 = 250 to estimate the cost of 45 hats.
Explain how Pavlov’s calculation shows the actual cost will
be less than £250.
There is a special offer.
(b) Work out the actual cost of buying 45 hats using the special offer.
(1)
Hats £4.60 each.
Buy 40 or more hats,
Get 10% off the total cost.
(4)
(Total for Question 1 is 5 marks)

9. Pavlov has rounded the cost and the quantity
GCSE
Edexcel Foundation: November 2017 Paper 1, Q16 1
Pavlov wants to buy 45 hats.
Each hat costs £4.60
Pavlov does the calculation 50 x 5 = 250 to estimate the cost of 45 hats.
Explain how Pavlov’s calculation shows the actual cost will
be less than £250.
There is a special offer.
(b) Work out the actual cost of buying 45 hats using the special offer.
Pavlov has rounded the cost and the quantity
up, so his estimate is an overestimate.
(1)
Hats £4.60 each.
Buy 40 or more hats,
Get 10% off the total cost.
(1: Total Price)
(2: Discount)
Find 45 x 4.60
10 x 4.60 = 46
5 x 4.60 = 23
So, 40 x 4.60 = 4 x 46 = 184
45 x 4.60 = = 207
10% of 207 =
207 ÷ 10 = 20.7
207.0
– 20.7
186.3
186.30
(4)
(Total for Question 1 is 5 marks)

10. GCSE
Edexcel Foundation: May 2017 Paper 1, Q20 1
Adrian is paid £1600 per month.
He is going to get a 4% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase.
10% = 160
1% = 16
4% = 4 x 16 = 64
= 1664
1664
(Total for Question 1 is 2 marks) 2
Sally is paid £1300 per month.
She is going to get a 3% increase in the amount of money he is paid.
Work out how much money Adrian will be paid per month after the increase.
10% = 130
1% = 13
3% = 3 x 13 = 39
= 1339
1339
(Total for Question 2 is 2 marks)

11. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
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