# Cardinal Numbers vs. Ordinal Numbers

#### Determiners - Lesson #8

There are two kinds of numbers in English – cardinal numbers and ordinal numbers.

We use these numbers in different ways.

We use cardinal numbers for the quantity of something.

Here are some examples of cardinal numbers. - one (1)
- two (2)
- three (3)
- ten (10)
- fifty-five (55)
- ninety-two (82)
- five hundred and sixty-six (566)

**Example Sentences**- I have
**one dollar. ** - She has
**three brothers. ** - They have
**50 days** to decide. - A week has
**seven days. **

**Note:** *We usually write the number 1-10 (one, two, three, etc.), and for all numbers bigger than ten we use the digits (55, 56….958, etc.)*

We use ordinal numbers to talk about order or position of something.

Here are some examples of ordinal numbers. - first (1st)
- second (2nd)
- third (3rd)
- fourth (4th)
- fifth (5th)
- sixth (6th)
- seventh (7th)
- eighth (8th)
- ninth (9th)
- tenth (10th)
- eleventh (11th)
- twelfth (12th)
- thirteenth (13th)
- fourteenth (14th)
- fifteenth (15th)
- sixteenth (16th)
- seventeenth (17th)
- eighteenth (18th)
- nineteenth (19th)
- ninety-first (91st)
- fifty-second (52nd)
- twenty-third (23rd)
- eighty-fourth (84th)
- forty-fifth (45th)
- sixty-sixth (66th)
- seventy-seventh (77th)
- thirty-eighth (38th)
- ninety-ninth (99th)
- one-hundred and first (101st)
- six-hundred and twelfth (612th)

Here are the most common times that we use ordinal numbers.

1. Dates- It is August
**23rd. ** (twenty-third) - My birthday is on January
**29th.** (twenty-ninth) - The concert in on
**May 1st.** (first)

2. Order- I finished in
**first** place in the competition. - You will go
**second. ** - He will present his idea
**third** and you will present your idea **fourth.** - I am
**first** in line and he is **fifth** in line.

3. Birthdays and Anniversaries - This is their
**twentieth wedding anniversary. ** - This is the boy's
**seventh birthday. **

4. Counting the number of times- This is
**the third time** that I have seen this movie. - This is
**my first time** visiting Europe. - This is
**the second time** that she has called today.

**These kinds of English grammar points are important details if you want to be a fluent English speaker. Do not worry too much about them but pay attention to them and try to use them correctly. Knowing the difference between cardinal numbers and ordinal numbers will help your English sound more natural. **