How to Write Ordinal Numbers Correctly

Ordinal numbers are an essential part of the English language, and they are frequently used in our conversations. These numbers help us to show position, sequence, or rank in different situations. Learning how to write ordinal numbers correctly is essential for language learners because it is often challenging for them to write them correctly. 

In this article, you will learn what ordinal numbers are, how to write them correctly, and examples of their usage in daily life sentences.

What are Ordinal Numbers in English?

Ordinal numbers are numbers that indicate the position or order of something in a list or sequence. They are different from cardinal numbers in English. Cardinal numbers help us to describe quantity. For example:

Examples of Ordinal Numbers:

• First
• Second
• Third

Examples of Cardinal Numbers:

• One
• Two
• Three

Ordinal numbers are used in various situations, such as dates, rankings, and steps in a process. Therefore, it is essential to know how to write these numbers correctly so that your writing is clear and understandable to your readers.

Difference Between Ordinal and Cardinal Numbers

Ordinal and cardinal numbers are two types of numbers in English. Both types are used to describe numbers in various situations. However, they are not the same and differ from each other. Therefore, understanding the distinction between cardinal and ordinal numbers is fundamental.

Cardinal Numbers

Cardinal numbers indicate “how many” and are used to count things and objects.

Examples:

• I have three apples.

Ordinal Numbers

On the other hand, ordinal numbers show position, order, or sequence. They are used to indicate rank or sequence in a process.

Examples:

• She finished in third place.

How to Write Ordinal Numbers

Writing Ordinal Numbers in Words

• Ist becomes first
• 2nd becomes second
• 3rd becomes third
• 4th becomes fourth

When writing ordinal numbers in words, use lowercase letters in general writing. For instance, first, second, third, etc.

In contrast, when we write ordinal numbers at the start of a sentence, it is always capitalized because the first letter of each sentence must be capitalized in English. For example:

• First, complete the form.

Writing Ordinal Numbers in Numerical Form

To write ordinal numbers in numerical form, we usually add the apostrophe suffix to the numbers. see the following examples:

• 1 = 1st

Common Rules and Conventions

Here are the common rules and conventions:

1. For numbers ending in 1 (except 11), use -st.

For example:

• 21st
• 31st

2. For numbers ending in 2 (except 12), use -nd.

For example:

• 22nd
• 32nd

3. For numbers ending 3 (except 13), use -rd.

For example:

• 23rd
• 33rd

4. For all other numbers, including those ending in 11, 12, 13, use -th.

For example:

• 11th
• 12th
• 13th

When to Use Ordinal Numbers

Ordinal numbers are used in several contexts. The most common are:

• Dates
• Rankings and Positions
• Other Contexts

Dates

Examples

• Today is March 1st.
• We will meet on the 15th of June.

Ranking and Positions

Examples

• She came in 2nd place.
• This is the 5th time I’ve visited this city.

Other Contexts

Other contexts where ordinal numbers are used include writing fractions, describing floors in a building, and talking about anniversaries.

Examples

• One-fourth of the cake was eaten.
• He lives on the 10th floor.
• It’s their 25th wedding anniversary.

How to Use Ordinal Numbers Correctly

By following the common rules mentioned above, you will be able to use ordinal numbers in your writing correctly. See the following examples of using ordinal numbers correctly:

One of the most common mistakes is placing the suffix incorrectly with ordinal numbers. See the following examples:

• 1th, 2th, 3th (Incorrect)
• 1st, 2nd, 3rd (Correct)

Second, you should avoid overuse of orndail numbers in your writing. 

• June 1th (Incorrect)
• June Ist (Correct)

One of the most common mistakes is placing the suffix incorrectly with ordinal numbers. See the following examples:

• 1st place winner was second in another competition. (Incorrect)
• The 1st place winner came second in another competition. (Correct)

Tips for Writing Ordinal Numbers Clearly

To write ordinal numbers effectively, follow these guidelines:

Consistency

Stick to one format, either words or numbers, throughout your documents. 

Context 

In formal writing, spell out or ordinal numbers under 10. For example, instead of writing 3rd, it is best to write third.  However, you should always use numerals for larger numbers.

Use in Heading

When ordninal numbers are part of the heading or used in titles, you should always capitalize them. For example:

• 5th Annual Science Fair

Examples of Ordinal Numbers in Sentences

Here are some examples of sentences using ordinal numbers correctly:

• This is my first time visiting Paris.
• The 100th episode of the show aired last night.
• She won 2nd place in the competition.
• Please read the instructions on the 3rd page.

FAQs About Ordinal Numbers

What are the suffixes for ordinal numbers in English?

The suffixes in English that indicate ordinal numbers include -st, -nd, -rd, and -the.

What is the difference between ordinal and cardinal numbers?

Cardinal numbers represent quantity (e.g., 1,2,3), while ordninal numbers show position or order in the sequence (e.g., 1st, 2nd, 3rd).

Final Thoughts

Ordinal numbers are essential for describing objects in English. These numbers are used to indicate objects, order, ranking, or steps in a process. These numbers are different from the cardinal numbers, which indicate quantity. 

By learning the rules for using ordinal numbers, you will be able to write them correctly in your writing. 

I hope this article helped you learn what ordinal numbers are, and how to write them correctly.

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