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Numeral adjectives in English

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What is adjective of number?

Number adjectives are used to show the precise countable number of things and people. They can show quantity, order, and position of nouns. Unlike quantity adjectives, they can be used only with countable nouns. 

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Cardinal numbers

Cardinal numbers are numbers used to directly refer to a quantity of something and ones we use on a daily basis in our speech when talking about the exact quantity of something.  

Cardinal numbers example

  • I passed my exam with 98% score.
  • Can you buy two apples, please?
  • She would like to order five steaks.

Table from 1 to 20

NumberWritten form numbers
1One
2Two
3Three
4Four
5Five
6Six
7Seven
8Eight
9Nine
10Ten
11Eleven
12Twelve
13Thirteen
14Fourteen
15Fifteen
16Sixteen
17Seventeen
18 Eighteen
19Nineteen
20Twenty

List: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

Table from 20 to 30

NumberWritten form numbers
20Twenty
21Twenty-one
22Twenty-two
23Twenty-three
24Twenty-four
25Twenty-five
26Twenty-six
27Twenty-seven
28Twenty-eight
29Twenty-nine
30Thirty

List: 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30

All remaining numbers with an ending different than zero follow the same structure as the one with twenty

Example

  • 37 - Thirty-seven
  • 54 - Fifty-four

Table from 40 to 100

NumberWritten form numbers
40Forty
50Fifty
60Sixty
70 Seventy
80Eighty
90Ninety
100One hundred

List: 40, 50, 60, 70, 80, 90, 100

Table from 100 to 1000

NumberWritten form numbers
100One hundred 
200Two hundred  
300Three hundred
400Four hundred
500 Five hundred
600Six hundred
700Seven hundred
800Eight hundred
900Nine hundred
1.000One thousand

List: 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000

Forming hundreds follow the same structure as the table with twenty above. However, at the front, you add what amount of a hundred it is + and. 

Example

  • 250 - Two hundred and fifty
  • 349 - Three hundred and forty-nine

Numbers greater than 1,000 

NumberWritten form numbers
1000One thousand
2000Two thousand
3000Three thousand
4000Four thousand
5000Five thousand
6000Six thousand
7000Seven thousand
8000Eight thousand
9000Nine thousand
10 000Ten thousand
100 000 One hundred thousand
1 000 000One million
1 000 000 000One billion

Forming thousands and above follow the same structure as the given examples below:

  • 5002 - Five thousand and two 
  • 7200 - Seven thousand and two hundred
  • 9231 - Nine thousand two hundred and thirty-one
  • 12 001 - Twelve thousand and one
  • 15 983 - Fifteen thousand nine hundred and eighty-three
  • 123 456 - One hundred and twenty-three thousand four hundred and fifty-six
  • 4 587 658 - Four million five hundred and eighty-seven thousand six hundred and fifty-eight

Percentages

Percentages in a text are written by first writing the exact numerical value of it and adding the word percent after it, which can also be substituted for the % symbol.

  • 75% - Seventy-five percent
  • 32.98% - Thirty-two point ninety-eight percent

What are ordinal numbers?

Ordinal numbers are used to show us how something or someone is ranked on a list and what their exact position is. They are only used to refer to a position but not a quantity which is what we use cardinal numbers for. Majority of the ordinal numbers follow the same structure with the exception from the written version of 1 to 4 as we can see from the table below. 

Ordinal numbers chart

Ordinal numberWritten form 
1stFirst 
2nd Second 
3rd Third 
4th Fourth 
5th Fifth 
6thSixth 
7thSeventh 
8th Eighth 
9th Ninth 
10th Tenth 
11th Eleventh 
12th Twelfth 
13th Thirteenth   
14th Fourteenth 
15thFifteenth 
16th Sixteenth 
17th Seventeenth 
18thEighteenth 
19th Nineteenth  
20thTwentieth 
21stTwenty-first
30thThirtieth 
40thFortieth 
50thFiftieth 
60thSixtieth 
70thSeventieth 
80thEightieth 
90thNinetieth 
100thOne hundredth 

Ordinal numbers examples

  • She was my first girlfriend.
  • This is my second attempt.
  • We completed the third assignment.
  • My final position was thirty-fourth.
  • It is my sixty-eighth anniversary. 

Ordinal numbers grammar

Ordinal numbers and their written form are rather specific thus it is important to pay attention to ensure the correct form is written. 

1. The most special cases are the first three numbers:

FirstTwenty-firstFifty-firstTwo hundred and first
SecondTwenty-secondSixty-secondThree hundred and second
ThidTwenty-thirdSixty-thirdFour hundred and twenty-third

As we can see from the table the form for firstsecond, and third remains a constant regardless of where it is used in a positional manner. 

2. The case of 11, 12, 13: While the ending number of them is the same as the one we discussed in the first example they are exception to the rule and always needs to be written in one specific way. 

  • Eleventh
  • Twelfth
  • Thirteenth

Cardinal and ordinal numbers

The main diffrence between the two is that cardinal numbers directly refer to a quantity whereas ordinal numbers only refer to a position but not quantity. 

However, the two work hand in hand as excluding the exception all of the other ordinal numbers are formed by adding the suffix -th to the cardinal number. 

Example:

Cardinal numberOrdinal number
SevenSeventh
NineNinth
Twenty-fourTwenty-fourth
Thirty-fiveThirty-fifth
 
 

Exercises

  1. Numbers 1 to 20 exercises
  2. Numbers 20 to 100 exercises
  3. Numbers from 100 to 1000 exercise
  4. Numbers greater than 1000 exercise
  5. Cardinal number worksheets
  6. Cardinal numbers exercise

Numbers 1 to 20 exercises


Numbers 20 to 100 exercises


Numbers from 100 to 1000 exercise


Numbers greater than 1000 exercise


Cardinal number worksheets


Cardinal numbers exercise


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Translated by Google Translate
Elisabetta . Elisabetta .
Thank you very much dear, I send you a hug :)
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Translated by Google Translate
Alessia T. Alessia T.
Thank you Hilary!

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Eline E. Eline E. NL
Thank you for your feedback Noelle, I will continue to do my very best for you!
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Krystyna K. Krystyna K. UA
Thank you Kelly! The pleasure is mine to work with you :)

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