un, dau, tri ... deg
Numbers One to Ten
Count to ten: un, dau, tri, pedwar, pump, chwech, saith, wyth, naw, deg.
How It Works
- un — 1
- dau — 2
- tri — 3
- pedwar — 4
- pump — 5
- chwech — 6
- saith — 7
- wyth — 8
- naw — 9
- deg — 10
Before a noun: pump → pum and chwech → chwe: pum munud (five minutes), chwe diwrnod (six days). The others stay the same: tri llyfr, saith diwrnod, deg punt. The noun stays singular; see Nouns After Numbers Stay Singular.
On their own the full forms are used: counting, phone numbers and house numbers, as in rhif pump (number five).
Masculine and feminine. Two, three and four have feminine forms (dwy, tair, pedair) for feminine nouns, and dau and dwy soften the noun after them: dau gi, dwy gath. See dau and dwy + soft mutation and tri tair pedwar pedair.
Numbers can mutate too, like other words: am bump o'r gloch (at five o'clock). See faint o'r gloch.
For numbers above ten, see decimal numbers un deg un.
Examples (6)
- Un, dau, tri, pedwar, pump!
One, two, three, four, five!
Counting uses the full forms.
- Dw i'n byw yn rhif chwech.
I live at number six.
Chwech keeps its full form when no noun follows.
- Mae'r bws yn dod mewn pum munud.
The bus is coming in five minutes.
Pump becomes pum before a noun.
- Dw i'n gweithio chwe diwrnod yr wythnos.
I work six days a week.
Chwech becomes chwe before a noun.
- Mae saith diwrnod mewn wythnos.
There are seven days in a week.
- Mae'n costio deg punt.
It costs ten pounds.
Punt stays singular after the number.
Common Mistakes
Using the full form pump before a noun.
Mae'r bws yn dod mewn pump munud.Mae'r bws yn dod mewn pum munud.Before a noun, pump shortens to pum (and chwech to chwe).
How It Connects
Related Patterns
- Nouns After Numbers Stay Singular
The noun after a number stays singular.
Level 1 - dau / dwy + Soft MutationTwo: Dau and Dwy
Two has a feminine form and softens the noun.
Level 2 - tri / tair, pedwar / pedairFeminine Three and Four
Three and four have feminine forms.
Level 2 - Numbers 11-99: un deg unNumbers 11 to 99
Count beyond ten.
Level 2 - Faint o'r gloch?Telling the Time
Use numbers to tell the time.
Level 2 - Traditional Numbers: un ar ddeg, ugainTraditional Counting in Twenties
An older way of counting you will still hear.
Level 4
Words in This Pattern
Practice un, dau, tri ... deg in Bubblegum
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