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Number
Practice Questions

145 CIE IGCSE Mathematics questions on Number, 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.

Try 2 sample questions on Number

Question 1 · 1 mark · Difficulty 1/3

Express 0.00347 in standard form.

  1. 34.7 × 10⁻⁴
  2. 0.347 × 10⁻²
  3. 3.47 × 10⁻³
  4. 3.47 × 10⁻²
Show answer & explanation
✓ Answer: C — 3.47 × 10⁻³
47 × 10⁻³. Award 1 mark. In standard form the number before the power is at least 1 and less than 10, and the decimal point moves 3 places: 3.47 × 10⁻³. 34.7 and 0.347 are outside that range, and 10⁻² is 0.0347.
Question 2 · 1 mark · Difficulty 1/3

A car travels 245 km on 35 litres of fuel. Calculate the fuel consumption in km per litre, giving your answer to 3 significant figures.

  1. 70.0 km/litre
  2. 7.00 km/litre
  3. 6.99 km/litre
  4. 0.143 km/litre
Show answer & explanation
✓ Answer: B — 7.00 km/litre
Fuel consumption = distance ÷ volume = 245 ÷ 35 = 7.00 km/litre (3 s.f.). Option D results from rounding error. Option A has an order-of-magnitude error (× by 10). Option B inverts the calculation, giving litres per km rather than km per litre.
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20 questions · 25 min · free

CIE IGCSE Mathematics: Number FAQ

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