
| 1 | yn | 6 | sei | 11 | yndig | 16 | yn e ghindig |
| 2 | dew | 7 | seth | 12 | dewddig | 17 | dew e ghindig |
| 3 | trui | 8 | oeth | 13 | truiddig | 18 | dewnoe |
| 4 | cathr | 9 | noe | 14 | cathorddig | 19 | cathr e ghindig |
| 5 | cinc | 10 | deg | 15 | kindig | 20 | gweint |
| 21 | yn e weint |
| 30 | deg e weint | 40 | dew weint |
| 50 | deg e ddew weint | 60 | trui weint |
| 70 | deg e drui weint | 80 | cathr gweint |
| 90 | deg e gathr gweint | 100 | cent |
| 1000 | mil | 1000000 | milliwn |
| 0 | sero, rhen | . | puith |
Before a noun cinc, gweint and cent become cin, gwein and cen. The noun being counted is always singular.
Big numbers are put before nouns in two different ways:
yn of e ghindig, sixteen men
yn e ghindig di llo hof, sixteen (of the)
men
Ordinal numbers exist for one to ten:
| 1st | prif | 6th | seist |
| 2nd | segunn | 7th | sethif |
| 3rd | terth | 8th | oethif |
| 4th | carth | 9th | noef |
| 5th | kint | 10th | degif |
In shorthand these are reduced to the number and the last two letters of the ordinal spelling.
`Once, twice, three times' are made with using the cardinal number with the noun gweg: yn weg, dew weg, trui weg, cathr gweg.