1. Approximating Calculations – 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 GCSE GCSE Edexcel Foundation: November 2017 Paper 1, Q20
Sarah and Jay use a calculator to work out 1
Sarah and Jay use a calculator to work out
Sarah’s answer is
Jay’s answer is
One of these answers is correct.
Use approximations to find out which answer is correct.
Sarah’s answer is
Jay’s answer is
One of these answers is correct.
Use approximations to find out which answer is correct.
(Total for Question 1 is 3 marks)
(Total for Question 1 is 3 marks)
GCSE
GCSE
Edexcel Foundation: November 2017 Paper 1, Q20
Edexcel Foundation: November 2017 Paper 1, Q20 1
Sarah and Jay use a calculator to work out 1
Sarah and Jay use a calculator to work out
Sarah’s answer is
Jay’s answer is
One of these answers is correct.
Use approximations to find out which answer is correct.
Sarah’s answer is
Jay’s answer is
One of these answers is correct.
Use approximations to find out which answer is correct.
(Total for Question 1 is 3 marks)
(Total for Question 1 is 3 marks)

5. GCSE Edexcel Foundation: May 2018 Paper 1, Q22 1
A cycle race across Europe is miles in length.
Annie knows her average speed for her previous races is miles per hour.
For the next race she will cycle 8 hours a day.
(a) Estimate how many days Annie will take to complete the race.
Annie trains for the race.
The average speed she can cycle at increases.
It is now miles per hour.
(b) How does this affect your answer to part (a)?
(Total for Question 1 is 4 marks)

7. GCSE Edexcel Foundation: November 2017 Paper 1, Q20 465 3.122+6.8
Sarah and Jay use a calculator to work out
Sarah’s answer is
Jay’s answer is
One of these answers is correct.
Use approximations to find out which answer is correct.
(Total for Question 1 is 3 marks)

8. GCSE Edexcel Foundation: May 2018 Paper 1, Q22 1
A cycle race across Europe is miles in length.
Annie knows her average speed for her previous races is miles per hour.
For the next race she will cycle 8 hours a day.
(a) Estimate how many days Annie will take to complete the race.
Annie trains for the race.
The average speed she can cycle at increases.
It is now miles per hour.
(b) How does this affect your answer to part (a)?
(Total for Question 1 is 4 marks)

9. Sarah’s answer is correct.
GCSE
Edexcel Foundation: November 2017 Paper 1, Q20 1
Sarah and Jay use a calculator to work out
Sarah’s answer is
Jay’s answer is
One of these answers is correct.
Use approximations to find out which answer is correct.
≈ = ≈ = = 25
Sarah’s answer is correct.
(Total for Question 1 is 3 marks)

10. 25 2000 GCSE Miles per day = 25 miles per hour x 8 hours = 200 miles
Edexcel Foundation: May 2018 Paper 1, Q22 1
A cycle race across Europe is miles in length.
Annie knows her average speed for her previous races is miles per hour.
For the next race she will cycle 8 hours a day.
(a) Estimate how many days Annie will take to complete the race.
2000 25
Miles per day = 25 miles per hour x 8 hours
= 200 miles
2000 total miles ÷ 200 miles per day = 10 days
OR) 2000 ÷ 25 ÷ 10 = 8 days
Annie trains for the race.
The average speed she can cycle at increases.
It is now miles per hour.
(b) How does this affect your answer to part (a)?
Less days will be required, OR, it will
not affect the answer because
I will still round down to 25.
(Total for Question 1 is 4 marks)

11. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
Any feedback would be appreciated .
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