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I don't know about that, but kids today say "one fourth" instead of "one quarter." At least in my hood. And I can see how that makes sense.
But you would think they would also say "one second" instead of "one half," but they don't. They're still saying "one half." "One second" might be confused with "one sixtieth" because there are sixty seconds in a minute, and sixty seconds in a degree.
I'd say 1/81 is "one eighty-first."
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