Where can I download free best buy questions PDF worksheets with answers?

On this MathsLinks page you can download free printable best buy questions PDF worksheets (Qs) and full worked solutions or mark schemes (Ans) from Ken Stafford, Ken Stafford (1), Maths Genie, Corbett Practice, Corbett Textbook, plus a printable one-page best buy questions revision guide.

What GCSE grade is best buy questions (3M)?

Best buy questions (topic code 3M) is a Grade 3 ratio & proportion topic in GCSE Maths for Edexcel, AQA, OCR, Eduqas and IGCSE specifications.

Free Best buy questions Worksheets (PDF) with Answers — GCSE Maths

Free Best buy questions PDF Worksheets & Answers

Grade 3 • Topic 3M

Resource	Questions	Answers
Ken Stafford GCSE past paper questions & solutions	Qs	Ans
Ken Stafford (1) Practice worksheet & worked solutions	Qs	Ans
Maths Genie Graded exam questions & solutions	Qs	Ans
Corbett Practice Practice Questions & answers	Qs	Ans
Corbett Textbook Textbook Exercise & answers	Qs	Ans
Maths Made Easy MME worksheet & model answers	Qs	Ans
Maths Takeaway GCSE Maths Takeaway exam questions	Qs	Ans
Dr Austin (1) Practice grid / worksheet & answers	Qs	Ans
Dr Austin (2) Practice grid / worksheet & answers	Qs	Ans
Dr Frost (B. Blocks) Building Blocks skill sheet & answers	Qs	Ans
Metatutor Topic worksheet & worked solutions	Qs	Ans
Metatutor (1) Topic worksheet & worked solutions	Qs	Ans
E Classroom GCSE topic booklet & answers	Qs	Ans
PMT (Edxl) Edexcel GCSE topic questions & solutions	Qs	Ans
PMT (AQA) AQA GCSE topic questions & solutions	Qs	Ans
PMT (IGCSE) Edexcel IGCSE topic questions & solutions	Qs	Ans
Cognito Interactive online lesson & practice	Page

Grade 3 topics
3A - Error intervals	3B - Operations with fractions
3C - Estimation	3D - Writing and simplifying ratio
3E - Ratio	3F - Proportion recipes
3G - Percentages	3H - Percentage change
3J - Exchange rates	3K - Conversions and units
3L - Scale drawings	3M - Best buy questions
3N - Substitution	3P - Solving linear equations
3Q - Straight line graphs	3R - Area and circumference
3S - Rotations	3T - Reflections
3U - Enlargements	3V - Translations
3W - Mixed transformations	3X - Area of compound shapes
3Y - Frequency trees	3Z - Two way tables

Explanation:

Best buy questions ask you to compare two or more offers and decide which one is better value for money. Always check that the units match first (for example, convert kilograms to grams using 1 kg = 1000 g, or litres to millilitres using 1 litre = 1000 ml).

Next, divide the price by the quantity to find the cost for a common amount (such as 1 item, 100 g, or 100 ml). On non-calculator papers, converting pounds into pence first avoids awkward decimals. Always finish with a clear sentence stating which option is better value.

Example Question 1:
A 300 g jar of honey costs £2.40.
A 500 g jar of honey costs £3.85.
Which jar is better value for money?

Solution:

Find the cost of 100 g for each jar:

• 300 g jar: 240p ÷ 3 = 80p per 100 g

• 500 g jar: 385p ÷ 5 = 77p per 100 g

77p < 80p, so the 500 g jar is better value.

Example Question 2:
Cola is sold in a pack of 6 cans (330 ml each) for £2.97, or a 2 litre bottle for £2.70.
Which option is better value for money?

Solution:

Convert both to ml (6 × 330 = 1980 ml; 2 L = 2000 ml):

• 6 cans (1980 ml): 297p ÷ 19.8 = 15p per 100 ml

• 2 L bottle (2000 ml): 270p ÷ 20 = 13.5p per 100 ml

13.5p < 15p, so the 2 litre bottle is better value.

Scanned GCSE Exam Questions & Worked Solutions

GCSE Past Paper Best buy questions Questions & Answers

10-Question Interactive Quiz More Past Paper Questions

Past Paper Example 1 OCR Nov 2018 1F Q15 5 marks

Full Paper (PDF) • Mark Scheme (PDF)

Tea bags of similar quality are sold in three different sized packs:

(a) Which pack is the best value for money?
Show how you decide. [4 marks]

(b) Explain why someone may buy a pack which is not the best value for money. [1 mark]

Worked Solution & Mark Scheme (5 marks)

Part (a) Solution:

Cost per tea bag: M1
Small: 210 ÷ 80 = 2.625p per bag M1
Medium: 355 ÷ 150 = 2.367p per bag M1
Large: 525 ÷ 220 = 2.386p per bag.
**Medium pack** is the best value because it has the lowest cost per tea bag A1

Answer (a): Medium pack (2.37p per bag vs 2.625p Small and 2.386p Large)

Part (b) Solution:

They may not have enough money for a larger pack, or they live alone and only want a small pack C1

Answer (b): E.g. They may only have £2.10 or only need a small number of tea bags

Past Paper Example 2 GCSE Nov 2019 2F Q14 3 marks

Full Paper (PDF) • Mark Scheme (PDF)

A shop sells compost in 20 litre bags and in 40 litre bags.
One day the shop had two special offers for the compost.

Which offer is the better value for money?
You must show how you get your answer.

Worked Solution & Mark Scheme (3 marks)

20L offer: 40 litres costs £3.50 M2
⇒ 120 litres costs 3 × £3.50 = £10.50. 40L offer: 3 × 40 = 120 litres costs £9. £9 < £10.50 so 40 litre bags are better value. A1

Answer: 40 litre bags (120 litres costs £9 vs £10.50, or 7.5p/litre vs 8.75p/litre)

Past Paper Example 3 GCSE May 2024 1F Q16 3 marks

Full Paper (PDF) • Mark Scheme (PDF)

Batteries are sold in packs of 4, in packs of 8 and in packs of 12

A pack of 4 batteries costs £1.80
A pack of 8 batteries costs £3.20
A pack of 12 batteries costs £6.00
Which pack gives the best value for money?
You must show how you get your answer.

Worked Solution & Mark Scheme (3 marks)

Pack of 4: £1.80 ÷ 4 = 45p per battery M1
Pack of 8: £3.20 ÷ 8 = 40p per battery M1
Pack of 12: £6.00 ÷ 12 = 50p per battery → Pack of 8 gives the best value for money A1

Answer: Pack of 8 (40p per battery vs 45p and 50p)

← 3L Scale drawings

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Best buy questions

Free Best buy questions PDF Worksheets & Answers

Guide to Best buy questions: Explanation, Diagrams & Worked Examples

GCSE Past Paper Best buy questions Questions & Answers