In this clip, you'll learn how to convert between yards and inches by formula. 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 solve word problems that require you to express yards as inches or inches as yards.
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How To: Use ">" (greater than) and "<" (less than) symbols

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

How To: Solve percentages without a calculator

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

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

How To: Divide small numbers by big numbers

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