Los Números

Números del 1 al 30

1	uno	11	once	21	veintiuno
2	dos	12	doce	22	veintidós
3	tres	13	trece	23	veintitrés
4	cuatro	14	catorce	24	veinticuatro
5	cinco	15	quince	25	veinticinco
6	seis	16	dieciséis	26	veintiséis
7	siete	17	diecisiete	27	veintisiete
8	ocho	18	dieciocho	28	veintiocho
9	nueve	19	diecinueve	29	veintinueve
10	diez	20	veinte	30	treinta

Números del 30 al 100

40	cuarenta	31	treinta y uno
50	cincuenta	42	cuarenta y dos
60	sesenta	53	cincuenta y tres
70	setenta	64	sesenta y cuatro
80	ochenta	75	setenta y cinco
90	noventa	86	ochenta y seis
100	cien	97	noventa y siete
		108	ciento ocho
		119	ciento diecinueve
		132	ciento treinta y dos

Números del 100 al 1000

200	doscientos	231	doscientos treinta y uno
300	trescientos	342	trescientos cuarenta y dos
400	cuatrocientos	453	cuatrocientos cincuenta y tres
500	quinientos	564	quinientos sesenta y cuatro
600	seiscientos	675	seiscientos setenta y cinco
700	setecientos	786	setecientos ochenta y seis
800	ochocientos	897	ochocientos noventa y siete
900	novecientos	915	novecientos quince
1.000	mil	1.119	mil ciento diecinueve
		4.132	cuatro mil ciento treinta y dos

Números muy grandes

100.000	cien mil
1'000.000	un millón
1.000.000	un millón
1 000 000	un millón
2'000.000	dos millones
1.000'000.000	mil millones
1.000.000.000	mil millones
1 000 000 000	mil millones
1'000.000'000.000	un billón
1.000.000.000.000	un billón
1 000 000 000 000	un billón
2'000.000'000.000	dos billones

Formato de Números en diferentes países

Albania, Belgium, Bosnia, Estonia, France, Finland, Hungary, Poland, Czech Republic, Slovakia and much of Latin Europe as well as French Canada:

1 234 567,89

In Spain, in handwriting it is also common to use an upper comma:

1.234.567'89

Brazil, Germany, Netherlands, Denmark, Italy, Portugal, Romania, Sweden, Slovenia, Greece and much of Europe:

1 234 567,89 or 1.234.567,89

In handwriting, 1˙234˙567,89 is also seen, but never in Denmark, the Netherlands, Portugal, Sweden or Slovenia.

In Italy a straight apostrophe is also used in handwriting: 1'234'567,89.

Switzerland: There are two cases.

1'234'567.89 is used for currency values.

For other values the SI style 1 234 567,89 is used.

When handwriting for non-currency values: 1'234'567,89.

English Canada, Ireland, Israel, Japan, Korea (both), Malaysia, New Zealand, Singapore, Taiwan, Thailand, the Philippines, the United Kingdom, and the United States:

1,234,567.89 or 1,234,567·89

The latter is generally found only in older, and especially handwritten, documents.

Australia used this style up until the 1970s; now it uses the SI style.

SI style:

1 234 567.89 or 1 234 567,89

(in their own publications the dot is used in the English version and the comma in the French version).

China:

Grouping can also be done every four digits:

123,4567.89

since names for large numbers in Chinese are based on powers of 10,000.

Japan is similar.

Mexico:

1'234,567.89

India:

Due to a numeral system using lakhs (lacs)

(1,00,000 equal to 100 000

and crores

(1,00,00,000 equal to 10 000 000),

comma is used at levels of thousand, lakh and crore, for example,

(10 million (1 crore) would be written as1,00,00,000.)

Million, Billion, Trillion...

People sometimes ask me the names of the large numbers. Here is a table. The system used in the U.S. is not as logical as that used in other countries (like Great Britain, France, and Germany). In these other countries, a billion (bi meaning two) has twice as many zeros as a million, and a trillion (tri meaning three) has three times as many zeros as a million, etc. But the scientific community seems to use the American system.

Number of zeros	U.S. & scientific community	Other countries
3	thousand	thousand
6	million	million
9	billion	1000 million (1 milliard)
12	trillion	billion
15	quadrillion	1000 billion
18	quintillion	trillion
21	sextillion	1000 trillion
24	septillion	quadrillion
27	octillion	1000 quadrillion
30	nonillion	quintillion
33	decillion	1000 quintillion

How to write big numbers

Think of dividing the numbers in groups of three starting from the right. You know how to way every group of three, then add the dividers' names (thousand, million, ...).