nd -iens are often written in the numerals instead of
-esimus and -ies.

Declension of the Cardinals.

80. 1. The declension of unus has already been given under Sec. 66.

2. Duo is declined as follows:--

_Nom._ duo duae duo
_Gen._ duorum duarum duorum
_Dat._ duobus duabus duobus
_Acc._ duos, duo duas duo
_Abl._ duobus duabus duobus

a. So ambo, _both_, except that its final o is long.

3. Tres is declined,--

_Nom._ tres tria
_Gen._ trium trium
_Dat._ tribus tribus
_Acc._ tres (tris) tria
_Abl._ tribus tribus

4. The hundreds (except centum) are declined like the Plural of bonus.

5. Mille is regularly an adjective in the Singular, and indeclinable. In
the Plural it is a substantive (followed by the Genitive of the objects
enumerated; Sec. 201, 1), and is declined,--

_Nom._ milia _Acc._ milia
_Gen._ milium _Voc._ milia
_Dat._ milibus _Abl._ milibus

Thus mille homines, _a thousand men_; but duo milia hominum, _two thousand
men_, literally _two thousands of men_.

a. Occasionally the Singular admits the Genitive construction; as, mille
hominum.

6. Other Cardinals are indeclinable. Ordinals and Distributives are
declined like Adjectives of the First and Second Declensions.

Peculiarities in the Use of Numerals.

81. 1. The compounds from 21 to 99 may be expressed either with the larger
or the smaller numeral first. In the latter case, et is used. Thus:--

triginta sex or sex et triginta, _thirty-six_.

2. The numerals under 90, ending in 8 and 9, are often expressed by
subtraction; as,--

duodeviginti, _eighteen_ (but also octodecim);

undequadraginta, _thirty-nine_ (but also triginta novem or novem et
triginta).

3. Compounds over 100 regularly have the largest number first; the others
follow without et; as,--

centum viginti septem, _one hundred and twenty-seven_.

anno octingentesimo octogesimo secundo, _in the year 882_.

Yet et may be inserted where the smaller number is either a digit or one of
the tens; as,--

centum et septem, _one hundred and seven_;

centum et quadraginta, _one hundred and forty_.

4. The Distributives are used--

a) To denote _so much each_, _so many apiece_; as,--

bina talenta eis dedit, _he gave them two talents ea