Ordinal Numbers

1st   first
2nd  second
3rd   third

4th  fourth
 5th fifth
6th  sixth
7th  seventh
8th  eighth
9th  ninth
10th tenth
11th eleventh
12th twelfth

13th thirteenth
14th fourteenth
15th fifteenth
16th sixteenth
17th seventeenth
18th eighteenth
19th nineteenth

20th twentieth
21st twenty-first
22nd twenty-second
23rd twenty-third
24th twenty-fourth

30th thirtieth
40th fortieth
50th fiftieth
60th sixtieth
70th seventieth
80th eightieth
90th ninetieth

100th one hundredth