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

How To: Divide small numbers by big numbers

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

How To: Find the area of irregular shapes

How To: Draw a parallelogram given base, angle & altitude

How To: Solve temperature subtraction problems (integers)

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

How To: Calculate the area of a parallelogram

How To: Do synthetic division in intermediate algebra

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

How To: Use a TI89 to calculate nCr

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

How To: Do normal probability calculations on a calculator

How To: Calculate the height and volume of a pyramid

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

How To: Find the vertices of a polygon of constraints

How To: Complete a proof involving angles

How To: Solve circlebased problems in basic geometry

How To: Find the Percent Given Two Numbers

How To: Convert between diameter and radius

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

How To: Divide small numbers by big numbers

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

How To: Find the area of irregular shapes

How To: Draw a parallelogram given base, angle & altitude

How To: Solve temperature subtraction problems (integers)

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

How To: Calculate the area of a parallelogram

How To: Do synthetic division in intermediate algebra

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

How To: Use a TI89 to calculate nCr

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

How To: Do normal probability calculations on a calculator

How To: Calculate the height and volume of a pyramid

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

How To: Find the vertices of a polygon of constraints

How To: Complete a proof involving angles

How To: Solve circlebased problems in basic geometry

How To: Find the Percent Given Two Numbers

How To: Convert between diameter and radius
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