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: Find the Percent Given Two Numbers

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

How To: Find a number given Its percent

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

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

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

How To: Find the area of a triangle when given 2 sides & angle

How To: Calculate Faster Than a Calculator

How To: Calculate the height and volume of a pyramid

How To: Find the standard deviation with the ZScore formula

How To: Derive the equation of a straight line

How To: Simplify fourth roots

How To: Do long division without a calculator

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

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

How To: Calculate the area of a parallelogram

How To: Find a missing side of a triangle, similar to another

How To: Calculate percent composition for chemistry

How To: Solve for the missing ratios or proportions

How To: Find a slope of a straight line with: Ax + By + C = 0
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