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Cardinal and Ordinal Adjectives

Cardinal: these types of numbers answer the question, “how many?”

 

The first cardinal number is zero (0). Every time (0) is used, it requires a plural noun.


Example:

How many birds are in the backyard?

There are zero birds.

There are no birds.

*remember*

 

Saying there are “no” birds is the same as saying there are “zero” birds.

If you want to say there is one (1), this requires a singular noun.

 

Example:

How many balls are on the court?

There is one ball.

One = Cardinal number adjective

Ball = singular noun – representing one (1)

 

Every other number (2 -> infinity) requires a plural noun.

 

How many guitars do you have?

I have three guitars.

Three = cardinal number adjective

Guitars = plural noun representing three (3)

 

How many baseball cards do you have?

I have 825 baseball cards.

825 = cardinal adjective

Baseball cards = plural noun representing 825

 

Now let’s learn about Ordinal Adjectives

Ordinal adjective: are numbers used to show order in a series.

 

Ordinal numbers follow a basic rule. When you learn this rule, you will be able to make lists of numbers in a series.

 

Ordinal adjective number rules:

*remember*

Always use the article the before an ordinal number.

 

Ordinal numbers: 1,2,3, and all combinations of 1,2,3

The first the 1st
The second the 2nd
The third the 3rd

 

The fifty-first the 51st
The thirty-second the 32nd
The twenty-third the 23rd

 

Ordinal numbers: 5, 8, 9, 12, and all combinations with 5,8, and 9

The fifth the 5th
The eighth the 8th
The ninth the 9th
The twelfth the 12th
The forty-fifth the 45th
The eighty-eighth the 88th
The twenty-ninth the 29th

 

For all other Ordinal numbers: use the Cardinal numbers + “th”

The fourth the 4th
The sixth the 6th
The seventh the 7th
The twenty-fourth the 24th
The seventy-sixth the 76th
The thirty-seventh the 37th

 

Examples:

 

Tomorrow is our twelfth day on vacation.

This is the fourth time I’ve seen this movie.

This is the second time I’ve been the ninth best runner in this race.

 

*end of lesson on Cardinal and Ordinal number Adjectives*