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 sum mixed numbers.
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How To: Remember "greater than" & "less than" symbols

How To: Calculate percent composition for chemistry

How To: Find a number given Its percent

How To: Find the Percent Given Two Numbers

How To: Convert Fahrenheit to Celsius with a formula

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

How To: Solve reverse percentage problems

How To: Calculate Faster Than a Calculator

How To: Find the slope from a set of points

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

How To: Use and find x & yintercepts in algebra

How To: Solve a line integral over a closed path

How To: Be a human calculator

How To: Calculate percentage with a calculator

How To: Find the Slope Given 2 Ordered Pairs

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

How To: Find a missing side of a triangle, similar to another

How To: Find the 100th term in a sequence

How To: Calculate the area of a parallelogram

How To: Use a TI89 to calculate nCr
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