grammar.numbers.ordinal
Ordinals: primero to décimo — then cardinals take over
Primero through décimo are everyday; beyond ten, spoken Spanish uses cardinals (el piso once). Primer/tercer shorten before masculine nouns.
grammarA2✓ Geprüftv0.1.0
Erklärung
Ordinal numbers from 'first' to 'tenth' are in everyday use: primero, segundo, tercero, cuarto, quinto, sexto, séptimo, octavo, noveno, décimo. They agree like adjectives: la segunda puerta, los primeros días.
Primero and tercero apocopate before a masculine singular noun, dropping the -o: el primer día, el tercer intento (but la primera vez, los primeros).
Beyond ten, spoken Spanish abandons ordinals and uses cardinals instead: el piso once ('the eleventh floor'), el siglo veintiuno ('the 21st century'), Alfonso doce ('Alfonso XII'). The higher ordinals (undécimo, vigésimo…) exist but sound formal and are rarely used in speech.
Beispiele
We live on the third floor.
Region: global
It's the fifth time I've called.
Region: global
It's the fifth time I've gone up to the tenth floor today.