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: Find the Percent Given Two Numbers

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

How To: Find the area of a parallelogram using geometry

How To: Find a number given Its percent

How To: Do long division without a calculator

How To: Calculate percent composition for chemistry

How To: Calculate the height and volume of a pyramid

How To: Translate a shape

How To: Solve percentages without a calculator

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

How To: Find the coordinate of a point

How To: Calculate the area of a parallelogram

How To: Determine the age of a fossil using carbon14

How To: Calculate math without a calculator

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

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

How To: Learn Calculus in 20 minutes

How To: Prove a triangle inscribed in a circle is right angled

How To: Find a missing angle outside of a triangle
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