Question 1 · 1 mark · Difficulty 1/3
Which of these is a prime number?
- 13
- 15
- 21
- 27
Show answer & explanation
✓ Answer: A — 13
13 has exactly two factors, 1 and 13, so it is prime. The others have more factors.
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AQA · GCSE · Mathematics
Types of number: integers, fractions, decimals, primes, factors and multiples
Practice Questions
19 AQA GCSE Mathematics questions on Types of number: integers, fractions, decimals, primes, factors and multiples, each with instant feedback and a full examiner-style mark scheme.
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Question 2 · 1 mark · Difficulty 1/3
Which of these is NOT a prime number?
- 9
- 2
- 7
- 11
Show answer & explanation
✓ Answer: A — 9
9 = 3 × 3, so it has factors other than 1 and itself and is not prime.
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AQA GCSE Mathematics: Types of number: integers, fractions, decimals, primes, factors and multiples FAQ
How many AQA GCSE Mathematics questions on Types of number: integers, fractions, decimals, primes, factors and multiples are there on Kramizo?
Kramizo currently has 19 exam-board-aligned practice questions on Types of number: integers, fractions, decimals, primes, factors and multiples 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 Types of number: integers, fractions, decimals, primes, factors and multiples 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 Types of number: integers, fractions, decimals, primes, factors and multiples 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 Types of number: integers, fractions, decimals, primes, factors and multiples typically tested on AQA GCSE Mathematics papers?
Types of number: integers, fractions, decimals, primes, factors and multiples 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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