Look for an easy way to find the least (or lowest) common multiple for a set of numbers? Like to think in pictures? Try the upsidedown birthday cake method! Learn how with this free video lesson. From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).
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How To: Find the Percent Given Two Numbers

How To: Remember "greater than" & "less than" symbols

How To: Use ">" (greater than) and "<" (less than) symbols

How To: Find a number given Its percent

How To: Find the slope of a line given 2 points with fractions

How To: Do long division without a calculator

How To: Derive a quadratic equation, given the roots

How To: Find the Slope Given 2 Ordered Pairs

How To: Figure out the domain & range of a piecewise function

How To: Calculate the area of a parallelogram

How To: Write a slopeintercept equation given an XY table

How To: Find the formula of a piecewise function given a graph

How To: Write a sum/difference of logarithms as a logarithm

How To: Calculate Faster Than a Calculator

How To: Find a missing coordinate given: coordinate & equation

How To: Find the area of a parallelogram using geometry

How To: Learn Calculus in 20 minutes

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

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2 Comments
thnx so much i was having a very hard time with my homework! your a life saver thnx again!
thank you for this post. you explained it better than my teacher! wish my school was flipped! flipped classroom rocks!
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