Cardinal Number and Ordinal Number

Cardinal and Ordinal Numbers

A Cardinal Number is a number that says how many of something there are, such as one, two, three, four, five.

An Ordinal Number is a number that tells the position of something in a list, such as 1st, 2nd, 3rd, 4th, 5th etc.

Most ordinal numbers end in "th" except for:

• one ⇒ first (1st)
• two ⇒ second (2nd)
• three ⇒ third (3rd)

Cardinal			Ordinal
1	One		1st	First
2	Two		2nd	Second
3	Three		3rd	Third
4	Four		4th	Fourth
5	Five		5th	Fifth
6	Six		6th	Sixth
7	Seven		7th	Seventh
8	Eight		8th	Eighth
9	Nine		9th	Ninth
10	Ten		10th	Tenth
11	Eleven		11th	Eleventh
12	Twelve		12th	Twelfth
13	Thirteen		13th	Thirteenth
14	Fourteen		14th	Fourteenth
15	Fifteen		15th	Fifteenth
16	Sixteen		16th	Sixteenth
17	Seventeen		17th	Seventeenth
18	Eighteen		18th	Eighteenth
19	Nineteen		19th	Nineteenth
20	Twenty		20th	Twentieth
21	Twenty one		21st	Twenty-first
22	Twenty two		22nd	Twenty-second
23	Twenty three		23rd	Twenty-third
24	Twenty four		24th	Twenty-fourth
25	Twenty five		25th	Twenty-fifth
…	…		…	…
30	Thirty		30th	Thirtieth
31	Thirty one		31st	Thirty-first
32	Thirty two		32nd	Thirty-second
33	Thirty three		33rd	Thirty-third
34	Thirty four		34th	Thirty-fourth
…	…		…	…
40	Forty		40th	Fortieth
50	Fifty		50th	Fiftieth
60	Sixty		60th	Sixtieth
70	Seventy		70th	Seventieth
80	Eighty		80th	Eightieth
90	Ninety		90th	Ninetieth
100	One hundred		100th	Hundredth
…	…		…	…
1000	One thousand		1000th	Thousandth