Answer:
When we use natural numbers for the purpose of counting and ordering elements, we call them ordinal numbers.
Explanation:
Ordinal numbers are adjectives, and part of natural numbers, which allow us to express the order or position that an element occupies. In short, they are the words we use to say what position an element takes in an ordered series.
To give a quick and understandable example:
In a 100m Olympic race, the runners reach the finish line in one position. The one who wins the gold medal has come first, the one who wins the silver medal has come second and the one with the broce medal is the third and so on.
Answer:
From 1st to 10th
1st -> Primero
2nd -> Segundo
3rd -> Tercero
4th -> Cuarto
5th -> Quinto
6th -> Sexto
7th -> Séptimo
8th -> Octavo
9th -> Noveno
10th -> Décimo
From 10th to 19th
Rule: decimo+ordinals (1-10)
For example:
11th -> Décimoprimero /Décimo primero or Undécimo (another valid way to say it)
12th -> Décimosegundo / Décimo segundo
13th -> Décimotercero / Décimo tercero
However 18th-> Décimoctavo / Décimo octavo not "Décimooctavo"
and so on...
From 20th to 90th
20th -> vigésimo
30th -> trigésimo
40th -> cuadragésimo
50th -> quincuagésimo (that's hard to pronunce, even for me haha)
60th -> sexagésimo
70th -> septuagésimo
80th -> octogésimo
90th -> nonagésimo
100th
100th -> centésimo
200th to 900th
Rather rare. Instead of saying the theoretically correct form, Spanish speakers in informal speech use a shortcut, instead of saying El ciclista fue el ducentésimo. (The cyclist was the 200th), it is common to hear El ciclista quedó en el lugar [número] doscientos (200). (The cyclist "got" the place [number] 200). "Doscientos" is the cardinal 200.
1,000th
1,000th -> Milésimo
Explanation:
Native Speaker here, I hope that this is helpful to you!
