Editing Ordinal indicator (section)

=== Irish ===
Numerals from 3 up form their ordinals uniformly by adding the suffix ''{{lang|ga|-ú}}'': ''{{lang|ga|3ú}}'', ''{{lang|ga|4ú}}'', ''{{lang|ga|5ú}}'', etc. When the ordinal is written out, the suffix adheres to the spelling restrictions imposed by the [[Irish phonology|broad/slender]] difference in consonants and is written ''{{lang|ga|-iú}}'' after slender consonants; but when written as numbers, only the suffix itself (''{{lang|ga|-ú}}'') is written. In the case of 4 (''{{lang|ga|ceathair}}''), the final syllable is [[Syncope (phonetics)|syncopated]] before the suffix, and in the case of 9 (''{{lang|ga|naoi}}''), 20 (''{{lang|ga|fiche}}''), and 1000 (''{{lang|ga|míle}}''), the final vowel is assimilated into the suffix.

Most multiples of ten end in a vowel in their cardinal form and form their ordinal form by adding the suffix to their genitive singular form, which ends in ''{{lang|ga|-d}}''; this is not reflected in writing. Exceptions are 20 (''{{lang|ga|fiche}}'') and 40 (''{{lang|ga|daichead}}''), both of which form their ordinals by adding the suffix directly to the cardinal (''{{lang|ga|fichiú}}'' and ''{{lang|ga|daicheadú}}'').

When counting objects, ''{{lang|ga|dó}}'' (2) becomes ''{{lang|ga|dhá}}'' and ''{{lang|ga|ceathair}}'' (4) becomes ''{{lang|ga|ceithre}}''.

As in French, the vigesimal system is widely used, particularly in people's ages. ''{{lang|ga|Ceithre scór agus cúigdéag}}'' – 95.

The numbers 1 (''{{lang|ga|aon}}'') and 2 (''{{lang|ga|dó}}'') both have two separate ordinals: one regularly formed by adding ''{{lang|ga|-ú}}'' (''{{lang|ga|aonú}}'', ''{{lang|ga|dóú}}''), and one [[Suppletion|suppletive]] form (''{{lang|ga|céad}}'', ''{{lang|ga|dara}}''). The regular forms are restricted in their usage to actual numeric contexts, when counting. The latter are also used in counting, especially ''{{lang|ga|céad}}'', but are used in broader, more abstract senses of "first" and "second" (or "other"). In their broader senses, {{lang|ga|céad}} and {{lang|ga|dara}} are not written as ''{{lang|ga|1ú}}'' and ''{{lang|ga|2ú}}'', though ''{{lang|ga|1ú}}'' and ''{{lang|ga|2ú}}'' may in a numeric context be read aloud as ''{{lang|ga|céad}}'' and ''{{lang|ga|dara}}'' (e.g., ''{{lang|ga|an 21ú lá}}'' may be read as ''{{lang|ga|an t-aonú lá is fiche}}'' or as ''{{lang|ga|an chéad lá is fiche}}'').

{| class="wikitable" style="text-align:left; width:40%;"
|-
|
! scope="col" | Cardinal
! scope="col" | Ordinal
|-
! scope="row" | 1
|{{lang|ga|a h-aon}}
|{{lang|ga|aonú}} ({{lang|ga|1ú}}) or {{lang|ga|céad}}
|-
! scope="row" | 2
|{{lang|ga|a dó}}
|{{lang|ga|dóú}} ({{lang|ga|2ú}}) or {{lang|ga|dara}}
|-
! scope="row" | 3
|{{lang|ga|a trí}}
|{{lang|ga|tríú}} ({{lang|ga|3ú}})
|-
! scope="row" | 4
|{{lang|ga|a ceathair}}
|{{lang|ga|ceathrú}} ({{lang|ga|4ú}})
|-
! scope="row" | 5
|{{lang|ga|a cúig}}
|{{lang|ga|cúigiú}} ({{lang|ga|5ú}})
|-
! scope="row" | 6
|{{lang|ga|a sé}}
|{{lang|ga|séú}} ({{lang|ga|6ú}})
|-
! scope="row" | 7
|{{lang|ga|a seacht}}
|{{lang|ga|seachtú}} ({{lang|ga|7ú}})
|-
! scope="row" | 8
|{{lang|ga|a hocht}}
|{{lang|ga|ochtú}} ({{lang|ga|8ú}})
|-
! scope="row" | 9
|{{lang|ga|a naoi}}
|{{lang|ga|naoú}} ({{lang|ga|9ú}})
|-
! scope="row" | 10
|{{lang|ga|a deich}}
|{{lang|ga|deichiú}} ({{lang|ga|10ú}})
|-
! scope="row" | 20
|{{lang|ga|fiche}} or {{lang|ga|scór}}
|{{lang|ga|fichiú}} ({{lang|ga|20ú}})
|-
! scope="row" | 30
|{{lang|ga|triocha}}
|{{lang|ga|triochadú}} ({{lang|ga|30ú}})
|-
! scope="row" | 40
|{{lang|ga|daichead}}, {{lang|ga|ceathracha}} or {{lang|ga|dhá scór}}
|{{lang|ga|daicheadú}} or {{lang|ga|ceathrachadú}} ({{lang|ga|40ú}})
|-
! scope="row" | 50
|{{lang|ga|caoga}}
|{{lang|ga|caogadú}} ({{lang|ga|50ú}})
|-
! scope="row" | 60
|{{lang|ga|seasca}} or {{lang|ga|trí scór}}
|{{lang|ga|seascadú}} ({{lang|ga|60ú}})
|-
! scope="row" | 70
|{{lang|ga|seachtó}}
|{{lang|ga|seachtódú}} ({{lang|ga|70ú}})
|-
! scope="row" | 80
|{{lang|ga|ochtó}} or {{lang|ga|ceithre scór}}
|{{lang|ga|ochtódú}} ({{lang|ga|80ú}})
|-
! scope="row" | 90
|{{lang|ga|nócha}}
|{{lang|ga|nóchadú}} ({{lang|ga|90ú}})
|-
! scope="row" | 100
|{{lang|ga|céad}}
|{{lang|ga|céadú}} ({{lang|ga|100ú}})
|-
! scope="row" | 1000
|{{lang|ga|míle}}
|{{lang|ga|míliú}} ({{lang|ga|1000ú}})
|}