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). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to work with inequalities in introductory algebra.
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How To: Remember "greater than" & "less than" symbols

How To: Find the Percent Given Two Numbers

How To: Calculate Faster Than a Calculator

How To: Find the surface area of a rectangular prism quickly

How To: Find the surface area of a rectangular prism easily

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

How To: Find a number given Its percent

How To: Find and sketch the domain of a multivariable function

How To: Convert Fahrenheit to Celsius with a formula

How To: Evaluate square roots

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

How To: Divide small numbers by big numbers

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

How To: Use a TI89 to calculate nCr

How To: Determine the age of a fossil using carbon14

How To: Solve for the missing ratios or proportions

How To: Calculate percent error in chemistry lab activities

How To: Graph x & y intercepts on a TI84 Plus calculator

How To: Find the Height of a Trapezoid.

How To: Solve percent equations
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