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 price per unit.
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How To: Find the Volume of Composite Figures (Also Called Composite Shapes)

How To: Find the Percent Given Two Numbers

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

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

How To: Do long division without a calculator

How To: Find a number given Its percent

How To: Find the area of a parallelogram using geometry

How To: Write a logarithm as a sum or difference of logarithms

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

How To: Calculate percent composition for chemistry

How To: Calculate the height and volume of a pyramid

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

How To: Find Leg Lengths and Hypotenuse of a 45 45 90 Triangle

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

How To: Simplify fourth roots

How To: Find a slope of a line parallel/perpendicular to it

How To: Calculate the area of complex shapes

How To: Use a mean and scatter plot for Statistics

How To: Simplify a complex fraction w/ binomial denominators

How To: Interpret a standard deviation

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

How To: Find the Percent Given Two Numbers

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

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

How To: Do long division without a calculator

How To: Find a number given Its percent

How To: Find the area of a parallelogram using geometry

How To: Write a logarithm as a sum or difference of logarithms

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

How To: Calculate percent composition for chemistry

How To: Calculate the height and volume of a pyramid

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

How To: Find Leg Lengths and Hypotenuse of a 45 45 90 Triangle

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

How To: Simplify fourth roots

How To: Find a slope of a line parallel/perpendicular to it

How To: Calculate the area of complex shapes

How To: Use a mean and scatter plot for Statistics

How To: Simplify a complex fraction w/ binomial denominators

How To: Interpret a standard deviation
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