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Just obtained one of these bad boys. Any tips/tricks I should know? Helpful or funny. : r/6thForm
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![Tips & Tricks on Casio Scientific Calculator fx-991ES Plus 2nd Edition [2020] - YouTube](https://i.ytimg.com/vi/zloXkMuSL6s/maxresdefault.jpg "Tips & Tricks on Casio Scientific Calculator fx-991ES Plus 2nd Edition [2020] - YouTube")
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