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 unpack and solve problems requiring use of multiple mathematical operators at once.
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How To: Find the area & perimeter of triangles & squares

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

How To: Do long division without a calculator

How To: Calculate probability in "at least one" problems

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

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

How To: Evaluate logarithms using a calculator TI83

How To: Find the Percent Given Two Numbers

How To: Calculate percent composition for chemistry

How To: Find extra points for a parabola (quadractic equation)

How To: Determine the age of a fossil using carbon14

How To: Find the area of a triangle given three points

How To: Calculate angles formed between transversals and parallel lines in geometry

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

How To: Find patterns in arithmetic sequences

How To: Divide small numbers by big numbers

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

How To: Convert Fahrenheit to Celsius with a formula

How To: Find the area of an oblique triangle using formulas

How To: Use a TI89 to calculate nCr

How To: Find the area & perimeter of triangles & squares

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

How To: Do long division without a calculator

How To: Calculate probability in "at least one" problems

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

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

How To: Evaluate logarithms using a calculator TI83

How To: Find the Percent Given Two Numbers

How To: Calculate percent composition for chemistry

How To: Find extra points for a parabola (quadractic equation)

How To: Determine the age of a fossil using carbon14

How To: Find the area of a triangle given three points

How To: Calculate angles formed between transversals and parallel lines in geometry

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

How To: Find patterns in arithmetic sequences

How To: Divide small numbers by big numbers

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

How To: Convert Fahrenheit to Celsius with a formula

How To: Find the area of an oblique triangle using formulas

How To: Use a TI89 to calculate nCr
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