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Learning objective

Understand and use standard form expressed as A × 10^n, where n is any integer and A is a number between 1 and 10. Be able to convert numbers to and from standard form, and perform calculations involving numbers in standard form. Note that core candidates will only perform calculations in standard form on Paper 3.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE MathematicsCore Number

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Quick explanation

Understand and use standard form expressed as A × 10^n, where n is any integer and A is a number between 1 and 10. Be able to convert numbers to and from standard form, and perform calculations involving numbers in standard form. Note that core candidates will only perform calculations in standard form on Paper 3

  • This point belongs to Standard form, especially Standard form outcomes.
  • You need to be able to understand and use standard form expressed as A × 10^n, where n is any integer and A is a number between 1 and 10. Be able to convert numbers to and from standard form, and perform calculations involving numbers in standard form. Note that core candidates will only perform calculations in standard form on Paper 3.
  • The key ideas to know are Calculate, Determine, and Show.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

CalculateDetermineShowWork out

Why it matters

This objective helps connect Standard form outcomes to exam-style questions, flashcards, and revision notes for Standard form.

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Paper 2 structured question: Standard form

Paper 2Core or Extended Mathematics2 marks

Description

Standard Form Calculation

Calculate the following: (3.5 × 10^4) + (2.1 × 10^4)

  1. a

    Calculate the sum of the two numbers in standard form.

    Aim for approximately 2 distinct marking points.

    [2]
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