Ingenious Math Trick Reveals How to Calculte Percentages in Your Head

Ben Stephen's viral tweet reveals a surprisingly simple solution on how to calculate percentages. Why weren't we taught this in school?

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A math problem stumped experts for 50 years. This grad student

A math problem stumped experts for 50 years. This grad student from Maine solved it in days - The Boston Globe

Woman blows people's minds after sharing simple method to

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Hate Math? These Mental Tricks Will Have You Multiplying Faster Than Einstein Ever Could! « Mind Hacks :: WonderHowTo

Mind-Blowing Percentage Trick Revealed How to Easily Calculate Percentages in Seconds

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Math tricks

Easy Math Tricks You'll Wish You'd Known

How to Calculate percentages in your head « Math :: WonderHowTo