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 problems requiring use of multiple mathematical operators at once.
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How To: Remember "greater than" & "less than" symbols

How To: Evaluate square roots

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

How To: Do long division without a calculator

How To: Find a number given Its percent

How To: Solve for the missing ratios or proportions

How To: Find the Percent Given Two Numbers

How To: Calculate Faster Than a Calculator

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

Find the discriminant (DELTA): quadratic equation

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

How To: Find the highest common factor (or HCF) of two numbers

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

How To: Factor a trinomial with negative leading coefficient

How To: Divide small numbers by big numbers

How To: Find the 100th term in a sequence

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

How To: Learn Calculus in 20 minutes

How To: Find the area of a circle when you know the diameter

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

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

How To: Evaluate square roots

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

How To: Do long division without a calculator

How To: Find a number given Its percent

How To: Solve for the missing ratios or proportions

How To: Find the Percent Given Two Numbers

How To: Calculate Faster Than a Calculator

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

Find the discriminant (DELTA): quadratic equation

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

How To: Find the highest common factor (or HCF) of two numbers

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

How To: Factor a trinomial with negative leading coefficient

How To: Divide small numbers by big numbers

How To: Find the 100th term in a sequence

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

How To: Learn Calculus in 20 minutes

How To: Find the area of a circle when you know the diameter

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