Ordinal Numbers

Grade 6 Math Worksheets

Ordinal numbers are numbers used to indicate the position or order of elements in a sequence. They express rank, order, or position and are typically used to describe the position of an item in relation to others. In English, ordinal numbers are often formed by adding the suffix “-th” to the cardinal number (e.g., “first” becomes “firstth”).

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Ordinal Numbers - Grade 6 Math Worksheet PDF

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Ordinal number can be best demonstrated as given below:

Here are the first few ordinal numbers along with examples:

First (1st): The initial position in a sequence.

Example: She finished the race in first place.

Second (2nd): The position following the first.

Example: He answered the question second during the quiz.

Third (3rd): The position following the second.

Example: The bronze medal is awarded for finishing third in the competition.

Fourth (4th): The position following the third.

Example: She arrived at the meeting fourth.

Fifth (5th): The position following the fourth.

Example: The team secured fifth place in the tournament.

Sixth (6th): The position following the fifth.

Example: He was the sixth person in line to buy tickets.

Seventh (7th): The position following the sixth.

Example: They celebrated their seventh anniversary last month.

Eighth (8th): The position following the seventh.

Example: The book is the eighth in the series.

Ninth (9th): The position following the eighth.

Example: She was the ninth student to complete the assignment.

Tenth (10th): The position following the ninth.

Example: This is the tenth time I’ve visited this museum.

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Solved Examples

1) What is the ordinal number for 9?

Answer: The ordinal number for 9 is “ninth.”

2) In the sequence 5, 12, 18, what is the ordinal number of the last term?

Answer: The ordinal number of the last term in the sequence 5, 12, 18 is “third.”

3) If you finish a race in 7th place, what is the ordinal number of your position?

Answer: The ordinal number of your position in this case is “seventh.”

4) Write the ordinal number for the cardinal number 20.

Answer: The ordinal number for 20 is “twentieth.”

5) What is the ordinal number for the day after the 5th of March?

Answer: The ordinal number for the day after the 5th of March is the “6th.”

6) If you are the 15th person in line, what is your ordinal position?

Answer: Your ordinal position in line is the “fifteenth.”

7) How do you spell the ordinal number for 8th? Select the best choice

a) Eihgth
b) Eighth
c) Eighht
d) Ehigth

Answer: b) Eighth

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Frequently Asked Questions

What are ordinal numbers?

Ordinal numbers are numbers that denote the position or order of elements in a sequence. They represent rank or position, such as first, second, third, etc.

How are ordinal numbers different from cardinal numbers?

Cardinal numbers represent quantity (e.g., 1, 2, 3), while ordinal numbers represent position or order (e.g., 1st, 2nd, 3rd).

What is the rule for forming ordinal numbers in English?

In English, most ordinal numbers are formed by adding the suffix “-th” to the cardinal number (e.g., four → fourth).

What are the common abbreviations for ordinal numbers?

Common abbreviations for ordinal numbers include adding “st,” “nd,” “rd,” or “th” to the cardinal number (e.g., 1st, 2nd, 3rd, 4th).

How are ordinal numbers used in dates?

In dates, ordinal numbers indicate the day of the month (e.g., January 1st, March 15th).

Do ordinal numbers have a limit, or do they continue indefinitely?

Ordinal numbers can theoretically continue indefinitely since they represent the order of elements in a sequence.

Can ordinal numbers be negative?

Ordinal numbers are typically used for positive positions in a sequence. Negative ordinal numbers are not standard usage.

How are ordinal numbers used in sports rankings?

Ordinal numbers are used to rank teams or individuals in sports, indicating their position in a tournament or competition (e.g., 1st place, 2nd place).

Are there irregularities in the formation of ordinal numbers in English?

Yes, some ordinal numbers have irregular forms, such as “first” instead of “oneth,” “second” instead of “twoth,” and “twelfth” instead of “twelveth.”

Can ordinal numbers be applied to more than just counting objects?

Yes, ordinal numbers can be used in various contexts beyond counting objects, such as ranking participants, describing steps in a process, or indicating positions in a race.

Gloria Mathew writes on math topics for K-12. A trained writer and communicator, she makes math accessible and understandable to students at all levels. Her ability to explain complex math concepts with easy to understand examples helps students master math. LinkedIn

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