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Number: factors, multiples, primes and square numbers
Practice Questions

40 SEA Mathematics questions on Number: factors, multiples, primes and square numbers, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Number: factors, multiples, primes and square numbers.

Try 2 sample questions on Number: factors, multiples, primes and square numbers

Question 1 · 1 mark · Difficulty 1/3

How many factors does 12 have?

  1. 5
  2. 4
  3. 6
  4. 12
Show answer & explanation
✓ Answer: C6
Award 1 mark. The factors of 12 are 1, 2, 3, 4, 6 and 12, which is six numbers in all. Counting only 2, 3, 4 and 6 gives 4 and forgets that 1 and the number itself are always factors.
Question 2 · 1 mark · Difficulty 1/3

Which of these numbers is NOT a multiple of 5?

  1. 50
  2. 45
  3. 65
  4. 52
Show answer & explanation
✓ Answer: D52
Award 1 mark. Every multiple of 5 ends in 0 or in 5, and 52 ends in 2. The numbers 45, 50 and 65 all appear in the five times table.
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SEA Mathematics: Number: factors, multiples, primes and square numbers FAQ

Is Kramizo free for SEA 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 Number: factors, multiples, primes and square numbers practice with other Mathematics topics or even switch to a totally different SEA 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 Number: factors, multiples, primes and square numbers questions aligned to the official SEA Mathematics syllabus?
Every question is written against the published SEA Mathematics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real SEA 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 SEA.
How is Number: factors, multiples, primes and square numbers typically tested on SEA Mathematics papers?
Number: factors, multiples, primes and square numbers appears across multiple question types on real SEA 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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