CARDINAL NUMBERS

Table of Cardinal Numbers

Carcinal numbers from 1 through 1,000,000
1 one 11 eleven 21 twenty-one 31 thirty-one
2 two 12 twelve 22 twenty-two 40 forty
3 three 13 thirteen 23 twenty-three 50 fifty
4 four 14 fourteen 24 twenty-four 60 sixty
5 five 15 fifteen 25 twenty-five 70 seventy
6 six 16 sixteen 26 twenty-six 80 eighty
7 seven 17 seventeen 27 twenty-seven 90 ninety
8 eight 18 eighteen 28 twenty-eight 100 a/one hundred
9 nine 19 nineteen 29 twenty-nine 1,000 a/one thousand
10 ten 20 twenty 30 thirty 1,000,000 a/one million

Separation between hundreds and tens

Hundreds and tens are usually separated by 'and' (in American English 'and' is not necessary).

110 - one hundred and ten
1,250 - one thousand, two hundred and fifty
2,001 - two thousand and one

Hundreds

Use 100 always with 'a' or 'one'.

100 - a hundred / one hundred

'a' can only stand at the beginning of a number.

100 - a hundred / one hundred
2,100 - two thousand, one hundred

Thousands and Millions

Use 1,000 and 1,000,000 always with 'a' or 'one'.

1,000 - a thousand / one thousand
201,000 - two hundred and one thousand

Use commas as a separator.

57,458,302

The Number 1,000,000,000

In English this number is a billion. This is very tricky for nations where 'a billion' has 12 zeros. 1,000,000,000,000 in English, however, is a trillion.

But don't worry, these numbers are even a bit problematic for native speakers: for a long time the British 'billion' had 12 zeros (a number with 9 zeros was called 'a thousand million'). Now, however, also in British English 'a billion' has 9 zeros. But from time to time this number still causes confusion (just like this paragraph, I'm afraid). ;o)

Singular or Plural?

Numbers are usually written in singular.

two hundred Euros
several thousand light years

The plural is only used with dozen, hundred, thousand, million, billion, if they are not modified by another number or expression (e.g. a few / several).

hundreds of Euros
thousands of light years