Cardinal Numbers and Ordinal Numbers in English Ordinal 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 30th Thirtieth Cardinal Numbers 0 Zero 1 One 2 Two 3 Three 4 Four 5 Five 6 Six 7 Seven 8 Eight 9 Nine 10 Ten 11 Eleven 12 Twelve 13 Thirteen 14 Fourteen 20 Twenty 30 Thirty 40 Forty 50 Fifty 100 One hundred 1.000 One thousand 10.000