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Numbers in English

Cardinal numbers – 

In English and mathematics, cardinal numbers are the numbers themselves in plain and simple form: 4, 1 15, 1345, 66, 87, 18, 56, 3, etc. These numbers indicate how many elements there are in an assemblage. Generally, it’s best to write the letter form of the number in writing and not the numeral form.

  • 76, 86 98, 1034, 54
  • I have twenty-five children accompanying me.
  • How many pigeons were on the window sill this morning? There were three.
  • I know about four guys who can help you.
  • He’s thirty-eight years old.
Ordinal numbers – 

Ordinal numbers are used to designate a place in English, such as; third, second, first, eighth, twenty-first, seventh, one-hundredth, eighty-ninth etc. We use them to show the position of something or someone in a series.

  • My brother came first (1st) in the running race.
  • I bet him to second (2nd) place.
  • I was ninety-ninth (99th) out of one hundred competitors, so not such a bad effort.
  • According to my results, I placed twenty-fourth (24th) out of the thirty-three members.
  • It’s not always about coming first (1st) place.
  • Prizes will be allocated to first (1st), second (2nd) and third (3rd) placed competitors.
Roman numbers – 

In English, we mainly use the standard Arabic numbers for mostly everything and more importantly, mathematics, although we do use Roman numbers also, for things such as; clocks numbers, naming historical events or statues, films, monuments etc. They are still used for historical reasons and they also look very aesthetic and classy.

  • I = 1
  • V= 5
  • X = 10
  • L = 50
  • C = 100
  • D = 500
  • M = 1000

 Upper case (capital letters) or lower case (small letters) can be used to form the numbers. 

Usually, letters are ordered in decline of the order of value, i.e. ‘XV’ = 15 (10+5). Letters can be repeated to increase value, i.e. ‘XX’ = 20, ‘XX’ = 30. Letters cannot be repeated more than three times, so ‘XXXX’ is not used for 40. In this case, ‘XL’ = 40 (50 takeaway 10).

Down below, you can see a full elaboration on Roman numerals:
Roman numerals
Arabic numerals
upper-case (capital letter)
lower-case (small letter)
Ii1
IIii2
IIIiii3
IViv4
Vv5
VIvi6
VIIvii7
VIIIviii8
IXix9
Xx10
XIxi11
XIIxii12
XIIIxiii13
XIVxiv14
XVxv15
XVIxvi16
XVIIxvii17
XVIIIxviii18
XIXxix19
XXxx20
XXIxxi21
XXIIxxii22
XXIIIxxiii23
XXXxxx30
XLxl40
Ll50
LXlx60
LXXlxx70
LXXXlxxx80
XCxc90
Cc100
CCcc200
CCCccc300
CDcd400
Dd500
Mm1000

See also:

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