English numerals

Here are some words for small numbers. Words in bold are irregular.

0	zero
1	one
2	two
3	three
4	four
5	five
6	six
7	seven
8	eight
9	nine

10	ten
11	eleven
12	twelve
13	thirteen
14	fourteen
15	fifteen
16	sixteen
17	seventeen
18	eighteen
19	nineteen

20	twenty
30	thirty
40	forty
50	fifty
60	sixty
70	seventy
80	eighty
90	ninety

When writing other numbers between 21 and 99, you must use a hyphen, like a minus sign (-).

21: twenty-one
22: twenty-two
23: twenty-three
24: twenty-four
25: twenty-five
26: twenty-six
27: twenty-seven
28: twenty-eight
29: twenty-nine
30: thirty
31: thirty-one
64: sixty-four
65: sixty-five
66: sixty-six
67: sixty-seven
98: ninety-eight
99: ninety-nine

The number 100 is written as "one hundred", but in general, sometimes people can say "a hundred".

The way numbers are written and spoken differs between American English and other forms of English, such as British English and Australian English, as follows.

American English

To write a whole number from 100 to 999 in American English:

First write how many hundreds.
Then write the word "hundred".
Then write the name of the two-digit number after the digit in the hundreds place.

In standard, written, American English, the word "and" is not in the word-name of any whole number even though many speakers insert it.

Examples:

101: one hundred one
102: one hundred two
175: one hundred seventy-five
200: two hundred
300: three hundred
400: four hundred
512: five hundred twelve
513: five hundred thirteen
600: six hundred
987: nine hundred eighty-seven

British and Commonwealth English

To write a whole number from 100 to 999 in British and Commonwealth English:

First write how many hundreds.
Then write the words "hundred and".
Then write the name of the two-digit number after the digit in the hundreds place.

In standard, written, British English (and the English spoken in many other places), the word "and" is in the word-name of many whole numbers.

Examples:

101: one hundred and one (NOT: one hundred one)
102: one hundred and two (NOT: one hundred two)
175: one hundred and seventy-five (NOT: one hundred seventy-five)
200: two hundred
300: three hundred
400: four hundred
500: five hundred
512: five hundred and twelve (NOT: five hundred twelve)
900: nine hundred
987: nine hundred and eighty-seven (NOT: nine hundred eighty-seven)

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