[*] 138. The Numeral Adverbs answer the question quotiēns ( quotiēs ), how many times? how often?
| 1 | semel, once |
| 2 | bis, twice |
| 3 | ter, thrice |
| 4 | quater |
| 5 | quīnquiēns (-ēs)1 |
| 6 | sexiēns |
| 7 | septiēns |
| 8 | octiēns |
| 9 | noviēns |
| 10 | deciēns |
| 11 | ūndeciēns |
| 12 | duodeciēns |
| 13 | terdeciēns |
| 14 | quaterdeciēns |
| 15 | quīndeciēns |
| 16 | sēdeciēns |
| 17 | septiēsdeciēns |
| 18 | duodēvīciēns |
| 19 | ūndēvīciēns |
| 20 | vīciēns |
| 21 | semel vīciēns,2 etc. |
| 30 | trīciēns |
| 40 | quadrāgiēns |
| 50 | quīnquāgiēns |
| 60 | sexāgiēns |
| 70 | septuāgiēns |
| 80 | octōgiēns |
| 90 | nōnāgiēns |
| 100 | centiēns |
| 200 | ducentiēns |
| 300 | trecentiēns |
| 1000 | mīliēns |
| 10,000 | deciēns mīliēns |
- ter et trīciēns ( centēna mīlia ) sēstertium, 3,300,000 sesterces (three and thirty times a hundred thousand sesterces).
- vīciēs ac septiēs mīliēs ( centēna mīlia ) sēstertium, 2,700,000,000 sesterces (twenty-seven thousand times a hundred thousand).
[*] Note.--These large numbers are used almost exclusively in reckoning money, and centēna mīlia is regularly omitted (see § 634).