Numeral, a word indicating quantity or order, is called numeral. English numerals can be used as subject, object, predicative and attributive of sentences. Numerals are divided into two categories, namely, cardinal words and ordinal numbers. Primitive words represent numbers, such as: one, two, three, four ...; Ordinal numbers indicates the order, such as: first, second, third, fourth ... ordinal numbers is usually preceded by the.
Extended data:
Cardinal words: words that represent numbers are called cardinal words. Its form is as follows:
(1). From1—10one, two, three, four, five, six, seven, eight, nine, ten．.
(2) From11——19 Eleven, twelve, thirteen, fourteen, Fifth, sixteen, seventeen, Eight, nineteen．.
Except eleven, twelve, thirteen, fifth and eighteen are special forms, fourteen, sixteen, seventeen and nineteen are all composed of their single-digit forms followed by the suffix -teen.
(3) From dozens of integers from 20 to 99, except for twenty, thirty, forty, fifty and eighty, six, seventy and ninety are all single-digit forms, and the suffix -ty is added. When it means tens, add the hyphen "-"21twenty-one 76 seven-six between tens and unit cardinal words.
(4) Add "hundredth" to the number of hundred digits, indicating hundreds, and add and between dozens and hundreds.
10 1 a hundred and one 320 three hundred and twenty 648 six hundred and forty-eight
(5) If the number is more than 1,000 digits, add a comma ","for every three digits, counting from the right end to the left end of the number. Starting from the right, the number before the first ","is followed by thousand, the number before the second ","is followed by million, and the number before the third ","is followed by million. Then, section by section, the largest number between two commas is in the form of hundreds.
References:
Baidu encyclopedia cardinal words