Ordinal numbers
Los números ordinales
| first / 1st | primeiro |
| second / 2nd | segundo |
| third / 3rd | terceiro |
| fourth / 4th | quarto |
| fifth / 5th | quinto |
| sixth / 6th | sexto |
| seventh / 7th | sétimo |
| eighth / 8th | oitavo |
| ninth / 9th | nono |
| tenth / 10th | décimo |
| eleventh / 11th | décimo primeiro |
| twelfth / 12th | décimo segundo |
| thirteenth / 13th | décimo terceiro |
| fourteenth / 14th | décimo quarto |
| fifteenth / 15th | décimo quinto |
| sixteenth / 16th | décimo sexto |
| seventeenth / 17th | décimo sétimo |
| eighteenth / 18th | décimo oitavo |
| nineteenth / 19th | décimo nono |
| twentieth / 20th | vigésimo |
| twenty-first / 21st | vigésimo primeiro |
| twenty-second / 22nd | vigésimo segundo |
| twenty-third / 23rd | vigésimo terceiro |
| twenty-fourth / 24th | vigésimo quarto |
| twenty-fifth / 25th | vigésimo quinto |
| twenty-sixth / 26th | vigésimo sexto |
| twenty-seventh / 27th | vigésimo sétimo |
| twenty-eighth / 28th | vigésimo oitavo |
| twenty-ninth / 29th | vigésimo nono |
| thirtieth / 30th | trigésimo |
| thirty-first / 31st | trigésimo primeiro |
Exercise
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