Il numero 991, novecentonovantuno in Italiano, in Inglese si dice nine hundred ninety-one.
Il numero ordinale 991° in inglese si dice nine hundred ninety-first.
982: nine hundred eighty-two
983: nine hundred eighty-three
984: nine hundred eighty-four
985: nine hundred eighty-five
986: nine hundred eighty-six
987: nine hundred eighty-seven
988: nine hundred eighty-eight
989: nine hundred eighty-nine
990: nine hundred ninety
992: nine hundred ninety-two
993: nine hundred ninety-three
994: nine hundred ninety-four
995: nine hundred ninety-five
996: nine hundred ninety-six
997: nine hundred ninety-seven
998: nine hundred ninety-eight
999: nine hundred ninety-nine
1000: one thousand