Il numero 20, venti in Italiano, in Inglese si dice twenty.
Il numero ordinale 20° in inglese si dice twentieth.
11: eleven 12: twelve 13: thirteen 14: fourteen 15: fifteen 16: sixteen 17: seventeen 18: eighteen 19: nineteen 21: twenty-one 22: twenty-two 23: twenty-three 24: twenty-four 25: twenty-five 26: twenty-six 27: twenty-seven 28: twenty-eight 29: twenty-nine