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

#1

How to Add And Subtract Fractions

How To Remember Which Sign Is Greater Than and Which Is Less Than

How To Figure Out Percentages

How To Multiply By 11

How To Multiply Large Numbers In Your Head

Use Lines To Multiply

How To Find Fractions Of Whole Numbers

How To Convert Fahrenheit to Celsius

How To Figure Out Multiples Of Nine

How To Figure Out What Day Of The Week Falls On What Date.

Secret To Remembering The Numbers In Pi