Everyday calculations explained: calories and TDEE, GPA, tips and US versus metric unit conversions.
A fast mental-math shortcut for Celsius to Fahrenheit, plus the exact formula for when you need the precise number.
Read ArticleThe real BMI formula in both metric and imperial units, plus an honest look at what the number does and doesn't tell you.
Read ArticleThe real credit-weighted GPA formula schools use, worked through with an example semester.
Read ArticleThe exact formula for percentage decrease, worked through with real numbers, plus the mistake that trips most people up.
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How US tipping norms actually work, the difference between tipping on pre-tax vs post-tax amounts, and how to split a bill evenly among a group.
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Why the US still uses customary units, the most commonly needed conversions, and a quick reference for exact conversion factors.
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How GPA is actually calculated, the real difference between weighted and unweighted scales, and how to calculate a target GPA for the rest of your term.
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How TDEE is actually calculated -- BMR plus activity level -- and how to use it to set a realistic calorie target for weight loss or gain.
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