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

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

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

How To: Convert between diameter and radius

How To: Calculate Faster Than a Calculator

How To: Find a number given Its percent

How To: Find the Percent Given Two Numbers

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

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

How To: Find how many toothpicks will be needed to form the nth figure in a sequence

How To: Find the equation of a line given 1 point

How To: Solve word problems involving domain and range

How To: Use derivatives to find slope in calculus

How To: Graph using the intercept method

How To: Calculate the growth rate or percentage change between two numbers

How To: Use the upsidedown birthday cake method to find a GCF

How To: Graph an inequality on a number line in Algebra

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

How To: Do long division without a calculator

How To: Convert Fahrenheit to Celsius with a formula

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

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

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

How To: Convert between diameter and radius

How To: Calculate Faster Than a Calculator

How To: Find a number given Its percent

How To: Find the Percent Given Two Numbers

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

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

How To: Find how many toothpicks will be needed to form the nth figure in a sequence

How To: Find the equation of a line given 1 point

How To: Solve word problems involving domain and range

How To: Use derivatives to find slope in calculus

How To: Graph using the intercept method

How To: Calculate the growth rate or percentage change between two numbers

How To: Use the upsidedown birthday cake method to find a GCF

How To: Graph an inequality on a number line in Algebra

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

How To: Do long division without a calculator

How To: Convert Fahrenheit to Celsius with a formula
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