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HomeAQA GCSE MathematicsSurds: simplifying, rationalising the denominator and basic calculations
AQA · GCSE · Mathematics

Surds: simplifying, rationalising the denominator and basic calculations
Practice Questions

20 AQA GCSE Mathematics questions on Surds: simplifying, rationalising the denominator and basic calculations, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Surds: simplifying, rationalising the denominator and basic calculations

Question 1 · 1 mark · Difficulty 1/3

Which of the following is the simplified form of √72?

  1. 6√2
  2. 8√3
  3. 3√8
  4. 4√18
Show answer & explanation
✓ Answer: A6√2
72 = 36 × 2, so √72 = √36 × √2 = 6√2. Option B is incorrect because 8√3 = √192. Options C and D are not fully simplified as they still contain square factors.
Question 2 · 1 mark · Difficulty 1/3

What is the result of rationalising the denominator of 1/√5?

  1. √5/5
  2. 1/5
  3. 5/√5
  4. √5
Show answer & explanation
✓ Answer: A√5/5
Multiply numerator and denominator by √5: (1 × √5)/(√5 × √5) = √5/5. Option B forgets to keep √5 in the numerator. Option D incorrectly removes the denominator entirely.
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AQA GCSE Mathematics: Surds: simplifying, rationalising the denominator and basic calculations FAQ

How many AQA GCSE Mathematics questions on Surds: simplifying, rationalising the denominator and basic calculations are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Surds: simplifying, rationalising the denominator and basic calculations for AQA GCSE Mathematics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real AQA paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for AQA GCSE students preparing for Mathematics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Surds: simplifying, rationalising the denominator and basic calculations practice with other Mathematics topics or even switch to a totally different AQA subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Surds: simplifying, rationalising the denominator and basic calculations questions aligned to the official AQA GCSE Mathematics syllabus?
Every question is written against the published AQA GCSE Mathematics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real AQA paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from AQA.
How is Surds: simplifying, rationalising the denominator and basic calculations typically tested on AQA GCSE Mathematics papers?
Surds: simplifying, rationalising the denominator and basic calculations appears across multiple question types on real AQA GCSE Mathematics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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