149. Ordinal numerals are adjectives which answer the question "Which
in order?" as "first", "third", etc. They are formed by adding the
adjectival suffix "-a" to the cardinals. The various parts of an ordinal
must be connected by hyphens, since it is to the entire cardinal, and
not any part of it, that the adjective ending "-a" is attached:
unua = first. kvardek-sesa = forty-sixth.
dua = second. cent-okdek-kvina :
tria = third. hundred and eighty-fifth.
oka = eighth. mil-okcent-kvara :
dek-unua = eleventh. one thousand eight hundred and
dek-nauxa = nineteenth. fourth.
dudek-sepa = twenty-seventh. sesmil-sepa :
six thousand and seventh.
[Footnote: Ordinal numerals may be abbreviated thus: "la", "1st", "2a",
"2nd", "3a", "3rd", "5a", "5th", "1912a", "1912th", "233a", "233rd",
etc. If the ordinal number is used in an accusative construction, the
abbreviation is given the accusative ending, as "lan", "2an", "3an",
"1912an", etc.]