[78]. Numerals may be divided into—
I. Numeral Adjectives, comprising—
a. Cardinals; as, ūnus, one; duo, two; etc.
b. Ordinals; as, prīmus, first; secundus, second; etc.
c. Distributives; as, singulī, one by one; bīnī, two by two; etc.
II. Numeral Adverbs; as, semel, once; bis, twice; etc.
[79]. TABLE OF NUMERAL ADJECTIVES AND ADVERBS.
| CARDINALS. | ORDINALS. | DISTRIBUTIVES. | ADVERBS. | |
| 1. | ūnus, ūna, ūnum | prīmus, first | singulī, one by one | semel, once |
| 2. | duo, duae, duo | secundus, second | bīnī, two by two | bis |
| 3. | trēs, tria | tertius, third | ternī (trīnī) | ter |
| 4. | quattuor | quārtus, fourth | quaternī | quater |
| 5. | quīnque | quīntus, fifth | quīnī | quīnquiēs |
| 6. | sex | sextus | sēnī | sexiēs |
| 7. | septem | septimus | septēnī | septiēs |
| 8. | octō | octāvus | octōnī | octiēs |
| 9. | novem | nōnus | novēnī | noviēs |
| 10. | decem | decimus | dēnī | deciēs |
| 11. | ūndecim | ūndecimus | ūndēnī | ūndeciēs |
| 12. | duodecim | duodecimus | duodēnī | duodeciēs |
| 13. | tredecim | tertius decimus | ternī denī | terdeciēs |
| 14. | quattuordecim | quārtus decimus | quaternī denī | quaterdeciēs |
| 15. | quīndecim | quīntus decimus | quīnī dēnī | quīnquiēs deciēs |
| 16. |
sēdecim, sexdecim | sextus decimus | sēnī dēnī | sexiēs deciēs |
| 17. | septendecim | septimus decimus | septēnī dēnī | septiēs deciēs |
| 18. | duodēvīgintī | duodēvīcēsimus | duodēvīcēnī | octiēs deciēs |
| 19. | ūndēvīgintī | ūndēvīcēsimus | ūndēvīcēnī | noviēs deciēs |
| 20. | vīgintī | vīcēsimus | vīcēnī | vīciēs |
| 21. |
vīgintī ūnus, ūnus et vīgintī |
vīcēsimus prīmus, ūnus et vīcēsimus |
vīcēnī singulī, singulī et vīcēni | vīciēs semel |
| 22. |
vīgintī duo, duo et vīgintī |
vīcēsimus secundus, alter et vīcēsimus |
vīcēnī bīnī, bīnī et vīcēnī | vīciēs bis |
| 30. | trīgintā | trīcēsimus | trīcēnī | triciēs |
| 40. | quadrāgintā | quadrāgēsimus | quadrāgēnī | quadrāgiēs |
| 50. | quīnquāgintā | quīnquāgēsimus | quinquāgēnī | quīnquāgiēs |
| 60. | sexāgintā | sexāgēsimus | sexāgēnī | sexāgiēs |
| 70. | septuāgintā | septuāgēsimus | septuāgēnī | septuāgiēs |
| 80. | octōgintā | octōgēsimus | octōgēnī | octōgiēs |
| 90. | nōnāgintā | nōnāgēsimus | nōnāgēnī | nōnāgiēs |
| 100. | centum | centēsimus | centēnī | centiēs |
| 101. |
centum ūnus, centum et ūnus |
centēsimus prīmus, centēsimus et prīmus |
centēnī singulī, centēnī et singulī | centiēs semel |
| 200. | ducentī, -ae, -a | ducentēsimus | ducēnī | ducentiēs |
| 300. | trecentī | trecentēsimus | trecēnī | trecentiēs |
| 400. | quadringentī | quadringentēsimus | quadringēnī | quadringentiēs |
| 500. | quīngentī | quīngentēsimus | quīngēnī | quīngentiēs |
| 600. | sescentī | sescentēsimus | sescēnī | sescentiēs |
| 700. | septingentī | septingentēsimus | septingēnī | septingentiēs |
| 800. | octingentī | octingentēsimus | octingēnī | octingentiēs |
| 900. | nōngentī | nōngentēsimus | nōngēnī | nōngentiēs |
| 1,000. | mīlle | mīllēsimus | singula mīlia | mīliēs |
| 2,000. | duo mīlia | bis mīllēsimus | bīna mīlia | bis mīliēs |
| 100,000. | centum mīlia | centiēs mīllēsimus | centēna mīlia | centiēs mīliēs |
| 1,000,000. | deciēs centēna mīlia | deciēs centiēs mīllēsimus | deciēs centēna mīlia | deciēs centiēs mīliēs |
NOTE.— -ēnsimus and -iēns are often written in the numerals instead of -ēsimus and -iēs.
Declension of the Cardinals.
[80]. 1. The declension of ūnus has already been given under [§ 66].
2. Duo is declined as follows:—