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Exam Tips

Part of Standard Form · GCSE GCSE Mathematics revision

This exam tips covers Exam Tips within Standard Form for GCSE Mathematics. Revise Standard Form in Number for GCSE Mathematics with 14 exam-style questions and 22 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 14 of 15 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.

Topic position

Section 14 of 15

Practice

14 questions

Recall

22 flashcards

Exam Tips

  • Always check: Is 'a' between 1 and 10?
  • Remember: Large → positive power, Small → negative power
  • Calculator: Know your EXP button
  • Addition: Convert to same power first
  • Show working: State each step clearly

Keep building this topic

Read this section alongside the surrounding pages in Standard Form. That gives you the full topic sequence instead of a single isolated revision point.

Common Mistakes to AvoidKnowledge Organiser: Standard FormNumbers Beyond ImaginationWhat is Standard Form?

Practice Questions for Standard Form

Which of these numbers is written in standard form?

  • A. 45 × 10³
  • B. 4.5 × 10⁴
  • C. 0.45 × 10⁵
  • D. 450 × 10²
1 markfoundation

Explain why standard form is useful for writing very large or very small numbers.

2 markshigher

Quick Recall Flashcards

Converting TO Standard Form
1. Move decimal to make 1 ≤ a < 10 2. Count places moved 3. Large (left) → positive power 4. Small (right) → negative power 780,000 → 7.8 × 10⁵
What is Standard Form?
A number written as a × 10ⁿ Where: • 1 ≤ a < 10 (at least 1, less than 10) • n is an integer (whole number) Example: 3.5 × 10⁴

14 questions on Standard Form — practise free

Instant marking, adaptive difficulty, and 22 spaced repetition flashcards. Free until your GCSEs.

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Common Mistakes to Avoid

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Knowledge Organiser: Standard Form