GCSE Maths (AQA)

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Converting to Standard Form

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Number Structure and Calculation

Converting to Standard Form

7:38 Standard Form
Spec N9
Previous Converting from Standard Form Next Standard Form Addition & Subtraction
  • To convert a number to standard form, determine how far the first digit needs to move to the unit's position
  • A number is in standard form if it can be written as a number between 1 and 10 multiplied by a power of 10
  • When converting a large number to standard form, the power of 10 is positive and represents the number of times the digits moved to the right
  • When converting a small number to standard form, the power of 10 is negative and represents the number of times the digits moved to the left
  • To convert a number to standard form, identify how to move the digits to find a suitable value for A and determine the value and sign of n
  • Check the conversion by multiplying A by 10 to the power of n and see if it equals the original number

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