Feb 23, 2026 · The correct way to write the ordinal form of thirty is 30th, not 30rd. When forming ordinals in English, the last two letters of the written word determine the ending.

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Incorrect spelling, explanation: this form, 30st, is a mistake because the suffix used to create ordinal numbers is the one that word forms of these numbers end with. Therefore thirtieth is 30th and thirty …

An Ordinal Number is a number that tells the position of something in a list, such as 1st, 2nd, 3rd, 4th, 5th and so on. Most ordinal numbers end in "th" except when the final word is: Note also that a …

Mar 5, 2024 · Therefore, “30th” is the proper way to write the ordinal form of “30”. Avoid using “30rd” or any other suffix, as they are incorrect and may lead to confusion. Remember, mastering the correct …

Feb 22, 2026 · So next time you’re marking a calendar or scheduling an event, remember it’s “30th,” never “30st.” Keeping your writing neat and following these simple rules will help ensure your …

The word thirty doesn’t have three in it so the suffix for the ordinal number is regular: -th. Therefore the correct form is 30th, not 30rd. Correct spelling, explanation: there are several suffixes used to create …

Mar 1, 2024 · So, let’s learn the question at hand – 30st or 30th, which is correct? The correct way to express the date in this case is “30th.” The suffix “-th” is used to denote ordinal numbers, which …

Mar 7, 2026 · In summary, “30th” is always the right way to refer to something that is numbered thirty in a series. Next time you’re writing or speaking, this handy tip will ensure you are correct.

Thirty, therefore, gets the suffix -th which is the most common suffix for ordinal numbers. Thus, 30th is the correct form. For my 30th, birthday I’m planning to go on a trip around Europe. I think coming …