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 (or just finish your homework or study for that next big test). 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 requiring use of the commutative law of addition.
 Hot
 Latest

How To: Find the Percent Given Two Numbers

How To: Calculate Faster Than a Calculator

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

How To: Find a number given Its percent

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

How To: Calculate the area of a parallelogram

How To: Multiply & Divide Numbers (Basic Elementary Math)

How To: Do long division without a calculator

How To: Find the area of a parallelogram using geometry

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

Use the quadratic equation: finding the mirror point

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

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

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

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

How To: Subtract a mixed number from a proper fraction in basic math

How To: Calculate the height and volume of a pyramid

How To: Convert between diameter and radius

How To: Calculate math without a calculator

How To: Find the 100th term in a sequence

How To: Find the Percent Given Two Numbers

How To: Calculate Faster Than a Calculator

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

How To: Find a number given Its percent

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

How To: Calculate the area of a parallelogram

How To: Multiply & Divide Numbers (Basic Elementary Math)

How To: Do long division without a calculator

How To: Find the area of a parallelogram using geometry

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

Use the quadratic equation: finding the mirror point

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

How To: Spend Money on a Graphing Calculator? Nah—Just Use This WebBased TI Emulator

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

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

How To: Subtract a mixed number from a proper fraction in basic math

How To: Calculate the height and volume of a pyramid

How To: Convert between diameter and radius

How To: Calculate math without a calculator

How To: Find the 100th term in a sequence
Be the First to Comment
Share Your Thoughts