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Solving inequalities

Free Printable Solving inequalities PDF Worksheets, Revision Guide & GCSE Past Paper Questions (Grade 4)

Download free solving inequalities worksheets (PDF), GCSE maths past paper questions and worked solutions for Solving inequalities (4F). This is a Grade 4 algebra topic from the GCSE questions by topic collection for Foundation and Higher tier crossover GCSE Maths (Edexcel, AQA, OCR and IGCSE).

The free PDF worksheets table below brings together printable question booklets (Qs) and worked answers or mark schemes (Ans) from Maths Genie, Corbett Maths, Maths Made Easy, Dr Frost, Naiker Maths, Dr Austin, 1st Class Maths, Metatutor, GCSE Maths Rocket, E Classroom and PMT, along with past paper question booklets.

Below the worksheet links you can read our solving inequalities revision notes and worked examples with diagrams, try real GCSE past paper solving inequalities questions with step-by-step solutions, or download a PDF of all solving inequalities worksheet links.

Free Solving inequalities PDF Worksheets & Answers

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GCSE Maths Grade 4 Revision Notes & Method

Guide to Solving inequalities: Explanation, Diagrams & Worked Examples

Download Printable One Page Guide (PDF)

Explanation:

Solve linear inequalities using the exact same inverse operations as linear equations, keeping the inequality sign (<, >, ≤, ≥) in the middle instead of an equals sign. Never replace the inequality sign with an = sign in your final answer!

Crucial rule: if you multiply or divide both sides by a negative number, you must flip the inequality sign around (or avoid negative x terms altogether by adding the negative x term to the other side).

Example 1: Solve 5x − 7 > 2x + 8

Solution:

Subtract 2x from both sides: 3x − 7 > 8
Add 7 to both sides: 3x > 15
Divide both sides by 3: x > 5
Answer: x > 5

Example 2: Solve the double inequality −5 ≤ 3x + 4 < 19 and state the largest integer x can be.

Solution:

Subtract 4 from all three parts: −9 ≤ 3x < 15
Divide all three parts by 3: −3 ≤ x < 5
Since x < 5, the largest integer is 4.
Answer: −3 ≤ x < 5; largest integer = 4
Scanned GCSE Exam Questions & Worked Solutions

GCSE Past Paper Solving inequalities Questions & Answers

Past Paper Example 1 IGCSE Jun 2019 2HR Q1 / 2FR Q17 3 marks
(a) Write down the inequality shown on the number line. (1) (b) Solve 4y – 13 ≤ y + 8. (2)
(a) Write down the inequality shown on the number line. [1 mark]
x–3–2–1012345
(b) Solve the inequality 4y - 13 ≤ y + 8 [2 marks]
Worked Solution & Mark Scheme (3 marks)
Part (a) Solution:
x > –3
Answer (a): x > –3
Part (b) Solution:
3y ≤ 21 M1
⇒ y ≤ 7 A1
Answer (b): y ≤ 7
Past Paper Example 2 IGCSE Jun 2025 1HR Q6 / 1FR Q21 4 marks
x−3−2−10123
(a) Inequality shown on number line (2) (b) Solve 7a − 5 ≤ 3a + 28 (2)
(a) Write down the inequality shown on the number line. [2 marks]
(b) Solve the inequality 7a - 5 ≤ 3a + 28
Show clear algebraic working.
[2 marks]
Worked Solution & Mark Scheme (4 marks)
Part (a) Solution:
Solve like an equation using inverse operations. M1
e.g. 3m - 2 > 10 ⇒ 3m > 12 ⇒ m > 4
Answer: -2 < x ≤ 1 A1
Answer (a): -2 < x ≤ 1
Part (b) Solution:
4a ≤ 33 M1
⇒ a ≤ 8.25 A1
Answer (b): a ≤ 8.25
Past Paper Example 3 IGCSE Jun 2021 1F Q22 5 marks
(a) Inequality on number line (b) Integer values of y for −4 ≤ 2y < 6 (c) Solve 7t − 3 ≤ 2t + 31
(a) Write down the inequality shown on the number line. [1 mark]
x−3−2−10123
(b) Write down all the possible values of y. [2 marks]
(c) Solve the inequality 7t - 3 ≤ 2t + 31
Show your working clearly.
[2 marks]
Worked Solution & Mark Scheme (5 marks)
Part (a) Solution:
x ≤ 2
Answer (a): x ≤ 2
Part (b) Solution:
−2 ≤ y < 3 M1
⇒ −2, −1, 0, 1, 2 A1
Answer (b): -2, -1, 0, 1, 2
Part (c) Solution:
5t ≤ 34 M1
⇒ t ≤ 6.8 A1
Answer (c): t ≤ 6.8

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