More numbers...

  1. In Text: If a number opens a sentence in the body text of your document, it should be expressed in words, not digits. In the body text, numbers up to ten are generally written as words and larger numbers written using digits. However, if a text (sentence or paragraph) has some small numbers and some larger ones, all numbers should be written with digits. Examples:

  2.   “There were ten questions on the questionnaire.”

  3.   “One group had 9 participants, the other 21 participants.”

  4. Fractions should be written using the slash “/” symbol.

  5. Decimal numbers should use a full stop “.” as decimal marker. (Note that the Bureau International des Poids et Mesures (BIPM) proposes either a comma (“,”) or a point (“.”) be used for this purpose. Scientific English language journals generally use the decimal point.) Decimal numbers between +1 and –1 should be preceded by a zero. Thus, “0.35”, not “.35”.

  6. Large numbers (>999) generally separate groups of three digits by a space to avoid confusion concerning the decimal point or decimal comma. Thus, “10 987”  rather than “10,987” but “10,987” would be more common in a non-scientific text in English. If possible, a non-breaking space (available in most word processors) should be used when writing numbers, to prevent such a number being split over two lines. Four digit numbers in the range 1000 to 9999 are often written without a space but in tabulations where there are some numbers with more than four digits, spaces should be used to preserve alignment of columns.

  7. Groups of numbers that succeed each other in the text should be separated with a comma:

  8.   “In 2005, 21 people were examined.”