Cardinal Numbers: How to Use Cardinal Numbers (with Chart and Examples)

Cardinal numbers!!! Cardinal numbers are the numbers we count with and probably what you think of first when you hear the word “number.” For example, “one,” “two,” and “three” are all cardinal numbers.

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Cardinal Numbers

Cardinal numbers are used to count a set of objects and tell us about quantity. These are also said to be cardinals.

We use cardinal numbers to count (e.g., one, two, three). Typically, in formal writing, you will want to write out numbers up to ten as words and use numerals for larger values.

For numbers in the hundreds, the British usually say “and” but the Americans often do not say “and”.

British English: 215 = two hundred and fifteen
American English: 215 = two hundred fifteen

Numbers	Read as
0	zero
1	one
2	two
3	three
4	four
5	five
6	six
7	seven
8	eight
9	nine
10	ten
11	eleven
12	twelve
13	thirteen
14	fourteen
15	fifteen
16	sixteen
17	seventeen
18	eighteen
19	nineteen
20	twenty
21	twenty-one
22	twenty-two
23	twenty-three
24	twenty-four
30	thirty
31	thirty-one
40	forty
50	fifty
60	sixty
70	seventy
80	eighty
90	ninety
100	one hundred
105	one hundred and five
174	one hundred and seventy-four
200	two hundred
1,000	one thousand
1,000,000	one million
1,000,000,000	one billion
1,000,000,000,000	one trillion

Examples:

There are 6 clothes in the cupboard.
4 cars are driving in a lane.
Anusha has 2 dogs and 1 cat as pets in her house.
The institute will invest 5,000,000 in the project.
The studies were carried out on calves that had been weaned at 5 weeks of age.
The workers had to lie off 3 days because of the bad weather.
These pedigrees contain 123 cases known to have been affected, with 76 currently alive.
The company laid off 250 workers in December.
Methods fiberoptic bronchoscope was used to examine 238 patients with atelectasis of unknown cause.
The study cohort comprised 625 patients of achalasia.
The British left in a convoy of 20 cars.
The last check-in time is 45 minutes before flight departure.
There were 103 cases of caretaker absence or incapacity, she said.
Of the 195 hospital cases, 55 developed kidney failure, and four children died.
From 1985 through 1992, 297 infected persons were identified in 27 states.