Looking for a guide on how to tell whether two fractions are rationally equivalent to one another? 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 fraction equivalency in basic math.
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How To: Remember "greater than" & "less than" symbols

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

How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

How To: Find the Percent Given Two Numbers

How To: Divide small numbers by big numbers

How To: Calculate percent composition for chemistry

How To: Calculate Faster Than a Calculator

How To: Calculate the height and volume of a pyramid

How To: Convert between diameter and radius

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

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

How To: Evaluate factorials with a TI83 calculator

How To: Find the polar form of a complex number

How To: Do long division without a calculator

How To: Calculate the area of a parallelogram

How To: Find the Height of a Trapezoid.

How To: Find the Radius of a Circle from Arc Length

How To: Subtract a mixed number from a proper fraction in basic math

How To: Find the value of a variable in an algebraic equation

How To: Solve advanced ratio problems in algebra
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