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. With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to unpack and solve word problems that require you to find a unit rate.
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How To: Use ">" (greater than) and "<" (less than) symbols

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

How To: Calculate percent composition for chemistry

How To: Do long division without a calculator

How To: Find the Percent Given Two Numbers

How To: Write a slopeintercept equation given an XY table

How To: Do a rotation in Geometry

How To: Calculate Faster Than a Calculator

How To: Find a number given Its percent

How To: Find the area of a circle when you know the diameter

How To: Find the standard deviation with the ZScore formula

How To: Interpret a standard deviation

How To: Simplify radicals which are not perfect squares

How To: Calculate math without a calculator

How To: Solve angle problems in geometry

How To: Find the area of a triangle quickly and easily

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How To: Draw a parallelogram given base, angle & altitude

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