Table of contents

  1. Writing numbers
  2. Number rounding
  3. Generalised numbers
  4. Millions and billions
  5. Page numbers
  6. Plus and minus
  7. Fractions
  8. Percentages
  9. Dates
  10. Time
  11. Ages
  12. Money
  13. Measurements and units
  14. Telephone numbers
  15. Superscript and subscript

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Millions and billions

Write out and use lower case.

2.5 million
148 billion

Do not use “0.xx million” for numbers less than 1 million, unless part of a sequence of numbers