Operations with Standard Form (Edexcel GCSE Maths)

Operations with Standard Form

How do I perform calculations with numbers in standard form?

• Your calculator can be used to help you carry out calculations with numbers written in standard form

• Make use of brackets around each number, and use the  button to enter numbers in standard form

  • e.g.  

  • You can instead use the standard multiplication and index buttons

• If the answer produced by your calculator is not in standard form, but the answer requires it:

  • Either rewrite it using the standard process

    • e.g. 3 820 000 = 3.82 × 10⁶

  • Or rewrite  in standard form, then apply the laws of indices

    • e.g.  243 × 10²⁰ = (2.43 × 10²) × 10²⁰ = 2.43 × 10²²