0580/13 Oct/Nov 2025, Question 27: Standard Form
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Non-calculator · 1 mark
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Explain why Sam's representation 85.1 × 10⁴ fails to satisfy the definition of standard form.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 1 mark
- 1Standard form is a × 10ⁿ with 1 ≤ a < 10
- 285.1 is greater than 10, so 85.1 × 10⁴ is not standard form (851 000 = 8.51 × 10⁵)
AnswerIn standard form the value is written as a × 10ⁿ where 1 ≤ a < 10 and 85.1 is greater than 10
Stuck on a step? Read the free lesson: Standard Form
Practise more standard form questions
Real 0580 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on standard form
Also searched as: 0580/13/O/N/25 · 0580_w25_qp_13 · 0580 w25 13 · question 27.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.