I am eighty years old.

I am eighty-eight years old.

Eighty-seven is the number of my favorite songs.

Eighty-one people took part in the competition.

I am eighty-two years old.

I am eighty-three years old.

I am eighty-four years old.

I am eighty-nine years old.

I am eighty-six years old.

I am eighty-five years old.