§ 1.The numeral is a part of speech which indicates numberorthe orderof persons and things in a series.
Accordingly numerals are divided into cardinals(cardinal numerals) and ordinals(ordinal numerals).
Cardinal numerals.
Cardinal numerals indicate exact number, they are used in counting. As to their structure, the cardinal numerals from 1 to 12 and 100, 1000, 1,000,000 are simple words (one, two, three, etc., hundred, thousand, million); those from 13 to 19 are derivatives with the suffix ‑teen (thirteen, fourteen, etc.); the cardinal numerals indicating tens are formed by means of the suffix ‑ty (twenty, thirty, etc.). The numerals from 21 to 29, from 31 to 39, etc. are composite: twenty-two, thirty-five, etc.
N o t e 1. — Twenty-two, thirty-five, etc. are spelt with a hyphen.
N o t e 2. — In two hundred and twenty-three, four hundred and sixteen etc.
there must be the word and after the word hundred.
Such cardinal numerals as hundred, thousand, million may be used with articles (a hundred, a thousand, a million); they may be substantivized and used in the plural (hundreds, thousands, millions). When used after other numerals they do not take ‑s (two hundred times, thirty thousand years etc.). The word million may be used with or without ‑s (two million, two millions). When the word million is followed by some other cardinal numeral only the first variant is possible: two million five hundred inhabitants.