This document provides information about ordinal numbers and their uses. Ordinal numbers indicate the position of an item in a list, such as 1st, 2nd, 3rd. It lists ordinal numbers from 1st to 1,000,000th and their written equivalents. Ordinal numbers are used to indicate order, such as Susan is the second girl in line. They are also used with dates, such as March 23rd. Roman numerals after names indicate order or rank, such as Henry VIII. Ordinal numbers are also used to write fractions such as 2/5 or 1/3.

1. Ordinal Numbers
An ordinal Number tells the position of something in a list.
Un Número Ordinal dice la posición de algo en una lista.
1st = First
2nd = Second
3rd = Third
4th = Fourth
5th = Fifth
6th = Sixth
7th = Seventh
8th = Eighth
9th = Ninth
10th = Tenth
11th = Eleventh
12th =Twelfth

2. Ordinal Numbers
13th = Thirteenth
14th = Fourteenth
15th = Fifteenth
16th = Sixteenth
17th = Seventeenth
18th = Eighteenth
19th = Nineteenth
20th = Twentieth
21st = Twenty-first
29th = Twenty-ninth

3. Ordinal Numbers.
30th = Thirtieth
39th = Thirty-ninth
40th = Fortieth
49th = Forty-ninth
50th = Fiftieth
59th = Fifty-ninth
60th = Sixtieth
69th = Sixty-ninth
70th = Seventieth
79th = Seventy-ninth
80th = Eightieth
89th = Eighty-ninth
90th = Ninetieth
99th = Ninety-ninth

4. Ordinal Numbers.
100th = One/a Hundredth
101st = One hundred (and) first
200th = Two hundredth
300th = Three hundredth
400th = Four hundredth
500th = Five hundredth
600th = Six hundredth
700th = Seven hundredth
800th = Eight hundredth
900th = Nine hundredth
1,000th = One/a Thousandth
1,000,000th = One /a millionth

5. Ordinal Numbers.
1- utilizamos los números ordinales para indicar orden.
Susan is the second girl in this line.
Tuesday is the third day of the week from Sunday.
2- Utilizamos los números ordinales para las fechas.
23(rd) March = The twenty-third of March
March 23 = March the twenty-third
My birthday is on January 8th.

6. Ordinal Numbers.
3- Indicar posición o rango jerárquico expresado en números romanos.
Henry VIII of England was born on June 28th, 1491.
(Henry the eighth)
4- Describimos fracciones y se usa en plural.
2/5 = Two fifths. 1/3 = One third
https://grammartop.com/cardinal-and-ordinal-numbers/

7. https://englishondemand.classonlive.com/
By Albert