Latin Numbers


Cardinal Numbers

These numerals also serve as pronouns and, in the case of unus, duo and tres, indefinite articles or adjectives.

unus (a, one)

  masculine   feminine   neuter
nom. unus   una   unum
acc. unum   unam   unum
gen. unius
dat. uni
abl. uno   una   uno

Example(s):

    unus uir, una poma, unum templum. (a man, an apple, one temple.)


duo (two)

  masculine   feminine   neuter
nom. duo   duæ   duo
acc. duos   duas   duo
gen. duorum   duarum   duorum
dat. duobus   duabus   duobus
abl. duobus   duabus   duobus

Example(s):

    duo uires, duarum mulieres, duobus templis. (two men, of the two women, by both temples.)


tres (three)

  masculine   feminine   neuter
nom. tres   tres   tria
acc. tres   tres   tria
gen. trium
dat. tribus
abl.

Example(s):

    tres iuuenes, tribus mulieribus, trium iugorum. (two young men, to the two women, of three passes [in the hills].)


Remaining cardinals...

 (four) quattuor
 (five) quinque
 (six) sex
 (seven) septem
 (eight) octo
 (nine) novem
 (ten) decem
 (eleven) undecim
 (twelve) duodecim
 (thirteen) tredecim
 (fourteen) quattuordecim
 (fifteen) quindecem
 (sixteen) sedecim
 (seventeen) septendecim
 (eighteen) duodeviginti
 (nineteen) undeviginti
 (twenty) viginti
 (twenty-one) viginti unus or unus et viginti
 (twenty-nine) undetriginta
 (thirty) triginta
 (forty) quadraginta
 (fifty) quinquaginta
 (sixty) sexaginta
 (seventy) septuaginta
 (eighty) octoginta
 (ninety) nonaginta
 (one hundred) centum
 (two hundred) ducenti
 (three hundred)trecenti
 (four hundred) qudringenti
 (five hundred) quingenti
 (six hundred) sescenti
 (seven hundred)septingenti
 (eight hundred)octingenti
 (nine hundred) nongenti
 (one thousand) mille
 (two thousand) duo milia
 (three thousand)tres milia
 (thousands) milia (but declines like the plural of mare and takes the genitive)

Example(s):

    mille milites ceciderunt. (a thousand soldiers fell [on the field of battle].)
    duo milia militum ceciderunt. (two thousand soldiers fell.)




Ordinal Numbers

primus (a, one)

  masculine   feminine   neuter
nom. primus   prima   primum
acc. primum   primam   primum
gen. primi   primæ   primi
dat. primo   primæ   primo
abl. primo   prima   primo

Example(s):

    primus uir, prima poma, primum templum. (the first man, a first apple, the first temple.)


These numbers decline according to the first and second declension adjectives (bonus, -a, -um) just as primus has already demonstrated.

Remaining ordinals...

 second secundus, alter (see declension of alter)
 third tertius
 fourth quartus
 fifth quintus
 sixth sextus
 seventh septimus
 eighth octavus
 nineth nonus
 tenth decimus
 eleventh undecimus
 twelfth duodecimus
 thirteenth tertius decimus
 fourteenth quartus decimus
 fifteenth quintus decimus
 sixteenth sextus decimus
 seventeenth septimus decimus
 eighteenth duodevicesimus
 nineteenth undevicesimus
 twentieth vicesimus
 twenty-first vicesimus primus
 twenty-nineth undetricesimus
 thirtieth tricesimus
 fortieth quadragesimus
 fiftieth quinquagesimus
 sixtieth sexagesimus
 seventieth septagesimus
 eightieth octogesumus
 ninetieth nonagesimus
 one hundredth centesimus
 two hundredth ducentesimus
 three hundredthtrecentesimus
 four hundredth quadringentesimus
 five hundredth quinqentesimus
 six hundredth sescentesimus
 seven hundredthseptingentesimus
 eight hundredthoctogentesiums
 nine hundredth nongentesimus
 one thousandth millesimus
 two thousandth bis millesimus



Distributive

None are declined and are only used in the plural:

singuli, -ae, -a (one by one, each)

bini, -ae, -a (two by two, each two)




Multiplicative

Used as adverbs...

semel (once, one time)

bis (twice, two times)

ter (thrice, three times)

quater (four times)

centies (a hundred times)

millies (a thousand times)