Associated Press style, which most news outlets follow, says, in general, spell out numbers less than 10, but use numerals for 10 and up. Why? They don’t say.

We also improved the content by presenting pronunciation and accentuation of words with classifiers after numerals “from 11 to 100, 1,000, and 10,000,” in addition to the conventional “from ...

In this Maths article, learn how to read and write numbers to 100.

The researchers noticed Mangarevans had words for numerals 1 through 10. But for numbers 20 through 80, they used a binary system, with separate, one-word terms for 20, 40 and 80.

The AP Stylebook says the percentage sign is now acceptable when paired with a numeral in most cases. On Friday, Stylebook Editor Paula Froke announced the latest round of changes to the grammar ...

We also improved the content by presenting pronunciation and accentuation of words with classifiers after numerals “from 11 to 100, 1,000, and 10,000,” in addition to the conventional “from ...