ORDINAL NUMBERS 1. First 1st 2. Second 2nd 3. Third 3rd 4. Fourth 4th From 5 onwards you use “th” for the ordinal number: 5th – 7th – 10th 21st 31st 41st 71st 22nd 32nd 52nd 82nd 23rd 33rd 63rd 93rd Exceptions: 11th 12th 13th 111th 112th 113th 211th 212th 213th HR/jr 2021