2.2.1 Spelling Out Numbers

As a general rule, spell out whole numbers from zero through one hundred, as well as round multiples of those numbers. Use numerals for larger or more precise numbers. When several numbers appear in the same sentence and some would normally be spelled out while others would not, use numerals for all numbers in the same category so the passage remains consistent.

In ordinary prose, spell out nontechnical measurements when doing so reads naturally. In tables, charts, technical descriptions, or cases using abbreviated units or symbols, use numerals. Percentages should be given with numerals and the word percent spelled out in running text.

• The ritual contains five sections and twenty-two formal invocations.
• The archive includes 137 letters, 9 notebooks, and 3 unpublished ritual drafts.
• The temple room measured twelve feet by eighteen feet.
• The diagram measures 4 × 10 cm and includes twelve Hebrew letters.
• The altar for the O.T.O. Gnostic Mass is approximately two and one-tenth meters in length.
• Only 5 percent of the surviving copies preserve the variant reading.

For fuller guidance on numerals and words, consult CMS17, §9.2–53.