The Ordinal Number
| 1 | st | first | 11 | th | eleventh | 21 | st | twenty-first | 31 | st | thirty-first | ||
| 2 | nd | second | 12 | th | twelfth | 22 | nd | twenty-second | 40 | th | fortieth | ||
| 3 | rd | third | 13 | th | thirteenth | 23 | rd | twenty-third | 50 | th | fiftieth | ||
| 4 | th | fourth | 14 | th | fourteenth | 24 | th | twenty-fourth | 60 | th | sixtieth | ||
| 5 | th | fifth | 15 | th | fifteenth | 25 | th | twenty-fifth | 70 | th | seventieth | ||
| 6 | th | sixth | 16 | th | sixteenth | 26 | th | twenty-sixth | 80 | th | eightieth | ||
| 7 | th | seventh | 17 | th | seventeenth | 27 | th | twenty-seventh | 90 | th | ninetieth | ||
| 8 | th | eighth | 18 | th | eighteenth | 28 | th | twenty-eighth | 100 | th | one hundredth | ||
| 9 | th | ninth | 19 | th | nineteenth | 29 | th | twenty-ninth | 1,000 | th | one thousandth | ||
| 10 | th | tenth | 20 | th | twentieth | 30 | th | thirtieth | 1,000,000 | th | one millionth | ||
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