how to say "first , second , third , fourth " y so on

Question

How to add the "th" to any number en espanol ??

 like fifteenth , thirteenth , one millionth , hundredth.
I know Primera , Segunda , Trecera and what comes after that? 

Answer 1

After décimo (tenth)

décimo primera, décimo segunda....

20Th vigésimo, vigésimo primera....

30th trigésimo, trigésimo primera...

40th cuadragésimo, cuadragésimo primera....

50th quincuagésimo, quincuagésimo primera... 60th sexagésimo, sexagésimo primera... 70th septuagésimo, septuagésimo primera... 80th octogésimo, octogésimo primera... 90th nonagésimo, nonagésimo primera... 100th centésimo, centésimo primera...

Wow, so hard!

what about 4th - 9 th? por favor ! - SELWICH425, MAY 8, 2010

so in spanish u say " 20th 1st for 21st " ? Es la Centuria de Vigesimo primera? - SELWICH425, MAY 8, 2010

sorry for asking too much but what about "Millionth" Milesimo? - SELWICH425, MAY 8, 2010

The twentieth century is called "el siglo ventiuno." - MacFadden, MAY 8, 2010

... and it's usually written "El Siglo X X I" (without the spaces; the forum wouldn't let me write it without the saces, though because it thoguht it was 'shouting'). - MacFadden, MAY 8, 2010

Answer 2

ordinal numbers: http://www.spanishclassonline.com/vocabulary/vocabOrdinal.htm

Answer 3

1a = Primera (1st)

2o = Segundo (2nd)

3o = Tercero (3rd)

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I thought you might be interested in the abbreviations, as well.

Answer 4

fourth - cuarto fifth - quinto sixth - sexto seventh - séptimo eighth - octavo ninth - noveno

thousandth - milésimo millionth - millonésimo billionth - billonésimo