the 6th extinction chapter summaries

Numbers ending in 3 → add rd → (3rd, 23rd, 53rd) All other numbers → add th → (4th, 6th, 20th, 100th) Exception: Even though 11th, 12th, and 13th end in 1, 2, and 3, they still take “th” because of their special spelling and pronunciation: 11th, 12th, 13th (not 11st, 12nd, or 13rd) Common Uses of Ordinal Numbers in English Have you ever wondered if you should write ‘6th’ or ‘6st’ for something that is in the sixth position? Let’s get into the details and help clear up any confusion. To summarize, the correct form is “6th” when expressing the ordinal number for “6.” This follows the general rule of adding “th” to the cardinal number and is consistent with the systematic formation of ordinal numbers in English.

Understanding the Context

Correct spelling, explanation: 6th is the correct form, because the full word is sixth, therefore the number form ends with th. 6st is mistaken because it would end with st, which is not the case: only first ends with st, so all numbers with first at the end will have this suffix. 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 ... Places 6th meridian east, a line of longitude extending through Europe and Africa 6th meridian west, a line of longitude extending through Europe and Africa 6th parallel north, a circle of latitude above the Equator 6th parallel south, a circle of latitude below the Equator 6th Street (disambiguation) Sixth Avenue (disambiguation)