I.Cardinal Numbers

Carcinal numbers from 1 through 1,000,000

1 one11

eleven21

twenty-one 31 thirty-one

2 two12

twelve22

twenty-two 40 forty

3 three13

thirteen23

twenty-three

50 fifty

4 four14

fourteen24

twenty-four 60 sixty

5 five15

fifteen25

twenty-five 70 seventy

6 six16

sixteen26

twenty-six 80 eighty

7seven

17

seventeen

27

twenty-seven

90 ninety

8 eight18

eighteen28

twenty-eight

100a/one hundred

9 nine19

nineteen29

twenty-nine 1,000a/one thousand

10ten20

twenty30

thirty1,000,000

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 ten1,250 - one thousand, two hundred and fifty2,001 - 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 hundred2,100 - two thousand, one hundred

Thousands and Millions

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

1,000 - a thousand / one thousand201,000 - 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 Eurosseveral 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 Eurosthousands of light years

II.Ordinal Numbers

Ordinal Numbers from 1 through 1,000,000

1 st first11

th eleventh21

st twenty-first 31 st thirty-first

2 nd second12

th twelfth22

ndtwenty-second

40 th fortieth

3 rd third13

th thirteenth23

rd twenty-third 50 th fiftieth

4 th fourth14

th fourteenth24

thtwenty-fourth

60 th sixtieth

5 th fifth15

th fifteenth25

th twenty-fifth 70 th seventieth

6 th sixth16

th sixteenth26

th twenty-sixth 80 th eightieth

7 thseventh

17

thseventeenth

27

thtwenty-seventh

90 th ninetieth

8 th eighth18

th eighteenth28

thtwenty-eighth

100 thone hundredth

9 th ninth19

th nineteenth29

thtwenty-ninth

1,000 thone thousandth

10 th tenth20

th twentieth30

th thirtieth1,000,000

thone millionth

                           

Form

Spelling of Ordinal Numbers

Just add th to the cardinal number:

four - fourth eleven - eleventh

Exceptions:

one - first two - second three - third five - fifth eight - eighth nine - ninth twelve - twelfth

In compound ordinal numbers, note that only the last figure is written as an ordinal number:

421st = four hundred and twenty-first 5,111th = five thousand, one hundred and eleventh

Figures

When expressed as figures, the last two letters of the written word are added to the ordinal number:

first = 1st second = 2nd third = 3rd fourth = 4th twenty-sixth = 26th hundred and first = 101st

Titles

In names for kings and queens, ordinal numbers are written in Roman numbers. In spoken English, the definite article is used before the ordinal number:

Charles II - Charles the Second Edward VI - Edward the Sixth Henry VIII - Henry the Eighth

3.Phone Numbers

Each figure is said separately.

24 - two four

The figure 'O' is called oh.

105 - one oh five

Pause after groups of 3 or 4 figures (last group).

376 4705 - three seven six, four seven oh five

If two successive figures are the same, in British English you would usually use the word double (in American English you would just say the figure twice)

376 4775 - BE: three seven six, four double seven five376 4775 - AE: three seven six, four seven seven five

IV.The >0<

nought - in general (British English) zero - in general (American English)   - in measurements of temperature (British and American English)   - in count-downs (British and American English)   - score in team games, e.g. football (American English) oh - when each figure is said separately (e.g. in phone numbers, account numbers etc.) nil - score in team games, e.g. football (British English)