81 - can also mean "another" and is most commonly used in that sense.
82 - can also be used as in giving a hand in some work. I've never heard it used as hand unless they want to beat you or want you to show what's in your hand.
87 - beach may be a better pronounciation for it. They sound the same actually.
89 - can also be used to mean elder.
90 - mostly used in letters. It's used in place of "To" on the envelope.