Ordinal numbers - 1st = first 2nd = second 3rd = third 4th = fourth 5th = fifth 6th = sixth 7th = seventh 8th = eighth 9th = ninth 70th = tenth 11th = eleventh 12th = twelfth 13th = thirteenth 20th = twentieth 21st = twenty-first 2 - Write the ordinal numbers for: 27, 30, 42, 56, 64.​