For example, the words first and twentieth are ordinal numbers, as are numerals with suffixes at the end like 1st and 20th. Ordinal numbers or ordinals are written using numerals as prefixes and adjectives as suffixes. For example, 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th and so on. We can easily identify an ordinal number: it talks about positioning.
Here are some examples of ordinal numbers in use:
As you can see, ordinal numbers are a helpful way to communicate position or rank. When used correctly, they can make your writing more precise and easier to understand.