Numerals (Numeralia)

The circumflex accent ( ˆ ) is used to denote the length of the vowels.

Arabic	Cardinal	Ordinal	Distributive	Num. Adverbs	Roman
1.	unus, una, unum	primus, 3	singuli, ae, a	semel	I.
2.	duo, duae, duo	secundus, 3 alter, era, erum	bini, ae, a	bis	II.
3.	tres, tria	tertius, 3	terni (trini), ae, a	ter	III.
4.	quattuor	quartus, 3	quaterni, ae, a	quarter	IV.
5.	quinque	quintus, 3	quini, ae, a	quinquies	V.
6.	sex	sextus, 3	seni, ae, a	sexies	VI.
7.	septem	septimus, 3	septeni, ae, a	septies	VII.
8.	octo	octâvus, 3	octoni, ae, a	octies	VIII.
9.	novem	nonus, 3	noveni, ae, a	novies	IX.
10.	decem	decimus, 3	deni, ae, a	decies	X.
11.	undecim	undecim, 3	undeni, ae, a	undecies	XI.
12.	duodecim	duodecimus, 3	duodeni, ae, a	duodecies	XII.
13.	tredecim	tertius decimus	terni deni	ter decies	XIII.
14.	quattuordecim	quartus decimus	quaterni deni	quater decies	XIV.
15.	quindecim	quintus decimus	quini deni	quinquies decies	XV.
16.	sedecim	sextus decimus	seni deni	sexies decies	XVI.
17.	septendecim	septimus decimus	septeni deni	septies decies	XVII.
18.	duodeviginti	duodevicesimus, 3	duodeviceni, ae, a	duodevicies	XVIII.
19.	undeviginti	undevicesimus, 3	undeviceni, ae, a	undevicies	XIX.
20.	viginti	vicesimus, 3	viceni, ae, a	vicies	XX.
21.	viginti unus unus et viginti	unus et vicesimus vicesimus primus	viceni singuli singuli et viceni	vicies semel semel et vicies	XXI.
28.	duodetriginta	duodetricesimus, 3	duodetriceni, ae, a	duodetricies	XXVIII.
29.	undetriginta	undetricesimus, 3	undetriceni, ae, a	undetricies	XXIX.
30.	triginta	tricesimus, 3	triceni, ae, a	tricies	XXX.
40.	quadraginta	quadragesimus, 3	quadrageni, ae, a	quadragies	XL.
50.	quinquaginta	quinquagesimus, 3	quinquageni, ae, a	quinquagies	L.
60.	sexaginta	sexagesimus, 3	sexageni, ae, a	sexagies	LX.
70.	septuaginta	septuagesimus, 3	septuageni, ae, a	septuagies	LXX.
80.	octoginta	octogesimus, 3	octogeni, ae, a	octogies	LXXX.
90.	nonaginta	nonagesimus, 3	nonageni, ae, a	nonagies	XC.
100.	centum	centesimus, 3	centeni, ae, a	centies	C.
200.	ducenti, ae, a	ducentesimus, 3	duceni, ae, a	ducenties	CC.
300.	tricenti, ae, a	tricentesimus, 3	treceni, ae, a	trecenties	CCC.
400.	quadringenti, ae, a	quadrigentesimus, 3	quadringeni, ae, a	quadringenties	CD.
500.	quingenti, ae, a	quingentesimus, 3	quingeni, ae, a	quingenties	D.
600.	sesgenti, ae, a	sescentesimus, 3	sesceni, ae, a	sescenties	DC.
700.	septingenti, ae, a	septingentesimus, 3	septingeni, ae, a	septingenties	DCC.
800.	octingenti, ae, a	octingentesimus, 3	octingeni, ae, a	octingenties	DCCC.
900.	nongenti, ae, a	nongentesimus, 3	nongeni, ae, a	nongenties	CM.
1000.	mille	millesimus, 3	singula milia	milies	M.
2000.	duo milia	bis millesimus, 3	bina milia	bis milies	MM.
3000.	tria milia	ter millesimus, 3	terna milia	ter milies	MMM.
10000.	decem milia	decies millesimus, 3	dena milia	decies milies
21000.	unum et viginti milia	semel et vicies millesimus, 3	vicena singula milia	semel et vicies milies
100000.	centum milia	centes millesimus, 3	centena milia	centies milies
1000000.	decies centena milia	decies centes millesimus, 3	decies centena milia	decies centies milies

The ordinals are declined like adjectives of I-II declensions.

The distributives are declined like adjectives of I-II declensions also, but in plural only. They are used to denote:

1. Equal numbers referring to each one of several objects, as in:

• Omnibus avibus duae sunt alae.

All burds have two wings.

The numeral adverbs are invariable words.

By adding the morphological element -plex or -plus -fold, multiplied by... there can be derived adjectives from the numerals:

• simplex, simplicis / siimplus, 3 onefold, simple
• duplex, duplicis / duplus, 3 twofold, double, duple
• triplex, triplicis / triplus, 3 threefold, treble, triple
• quadruplex, quadruplicis / quadruplus, 3 fourfold, quadruple
• quintuplex, quintuplicis / quintuplus, 3 fivefold, quintuple
• sextuplex, sextuplicis / sextuplus, 3 sixfold, sextuple
• ...