Il numero 90, novanta in Italiano, in Inglese si dice ninety.
Il numero ordinale 90° in inglese si dice ninetieth.
81: eighty-one
82: eighty-two
83: eighty-three
84: eighty-four
85: eighty-five
86: eighty-six
87: eighty-seven
88: eighty-eight
89: eighty-nine
91: ninety-one
92: ninety-two
93: ninety-three
94: ninety-four
95: ninety-five
96: ninety-six
97: ninety-seven
98: ninety-eight
99: ninety-nine