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Casio Scientific Calculator | Wilko
Casio Classwiz Statistics Mode - Find Mean, Variance and other information (991EX, 570EX) | Calculator, Scientific calculator, Standard deviation
For "decimal" Please consider pressing (S<->D) button for f**k sake! - 9GAG
Change an improper fraction to a mixed number & input a mixed number | Calculator, Improper fractions, Fractions
Interesting fact: The power on button on Casio's higher end calculators are half pressed by default so you don't accidentally clear the screen by pressing the 'on' button. (I thought it's a