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

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How To: Find the Percent Given Two Numbers

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

How To: Find the area of a rectangle

How To: Calculate Faster Than a Calculator

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

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

How To: Clear fractions from linear equations in Algebra

How To: Divide small numbers by big numbers

How To: Calculate percent composition for chemistry

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

How To: Determine the age of a fossil using carbon14

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

How To: Calculate the height and volume of a pyramid

How To: Use the ratio formula to find coordinates of a point

How To: Write a slopeintercept equation given an XY table

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

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

How To: Do long division without a calculator

How To: Square expressions involving radicals

How To: Find the Percent Given Two Numbers

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

How To: Find the area of a rectangle

How To: Calculate Faster Than a Calculator

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

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

How To: Clear fractions from linear equations in Algebra

How To: Divide small numbers by big numbers

How To: Calculate percent composition for chemistry

How To: Convert between diameter and radius

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

How To: Determine the age of a fossil using carbon14

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

How To: Calculate the height and volume of a pyramid

How To: Use the ratio formula to find coordinates of a point

How To: Write a slopeintercept equation given an XY table
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