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Useful Math Hacks That They Didn't Teach You In School

#1 Multiplying By 11

You can do this in your head with this simple formula!

#2 Celsuis To Farenheit To Celsius

It's not exact, but it's approximate, and it helps.

#3 The Table Of 9

This is a super easy way to figure out the multiples of 9.

#4 The Reverse Zorro

Finding fractions of whole numbers!!

#5 Multiplying Large Numbers In Your Head

I'm going to practice this ASAP!

#6 The Value Of Pi

You have to remember the sentence, though...

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