"Tom is FIRST, Sally is SECOND and Mary is THIRD". We could say this about 3 children in a running race. These numbers indicate the order or position on a list. Continue the lesson below.
The abbreviation of ordinal numbers is formed using the number and the last two letters of the word. The rules for the written words are the same as those of ordinal numbers (we use a hyphen for tens and for hundreds, thousands and millions, we use “and”).
| 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 |
| 30th | thirtieth |
| 40th | fortieth |
| 50th | fiftieth |
| 60th | sixtieth |
| 70th | seventieth |
| 80th | eightieth |
| 90th | ninetieth |
| 100th | hundredth |
| 101st | hundred and first |
| 200th | two hundredth |
| 1,000th | thousandth |
| 10,000th | ten thousandth |
| 100,000th | hundred thousandth |
| 1,000,000th | millionth |
