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How to use Binary, Octal, Hexadecimal number system in calculator: Casio fx-991ES Plus [2020] - YouTube
How to fix the answer in limited decimal places | Casio fx 991 plus calculator | The calculator king - YouTube
Why is my answer never in decimal format? I've done as was said in all YouTube videos none of them worked. : r/calculators
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Quick and fast fraction to decimal conversion on Casio fx-991EX Classwiz | Learn to convert fraction to decimal and vice versa on the fastest non-programmable scientific calculator - Casio fx-991EX Classwiz.
How to Convert between Decimal and Fraction | Casio fx-115ES and fx-991ES Calculator - YouTube