English Numbers: Cardinal Numbers

Cardinal numbers are basic English numbers. We use them to count and describe how much of something there is.

English

Cardinal Numbers: Overview

Here's an overview of how to write cardial numbers in English:

1	one	11	eleven	21	twenty-one	31	thirty-one
2	two	12	twelve	22	twenty-two	40	forty
3	three	13	thirteen	23	twenty-three	50	fifty
4	four	14	fourteen	24	twenty-four	60	sixty
5	five	15	fifteen	25	twenty-five	70	seventy
6	six	16	sixteen	26	twenty-six	80	eighty
7	seven	17	seventeen	27	twenty-seven	90	ninety
8	eight	18	eighteen	28	twenty-eight	100	one hundred
9	nine	19	nineteen	29	twenty-nine	1,000	one thousand
10	ten	20	twenty	30	thirty	1,000,000	one million

Tens

Rule 1: We put an and between the hundreds and the tens in British English. If there are no tens, we put the and before the single digits. We can skip the and in American English.

English 2

Hundreds

Rule 2: We put a or one before the number 100, but only at the beginning of a number.

English 2

Thousands and Millions

Rule 3: We use a and one with thousands and millions the same way as with hundreds.

English 2

Note: In English, we separate thousands by commas.

Quiz

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What is the correct spelling? 11