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 you to round whole numbers.
 Hot
 Latest

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

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

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

How To: Do long division without a calculator

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

How To: Figure out and calculate sales tax

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

How To: Divide small numbers by big numbers

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

How To: Write a slopeintercept equation given an XY table

How To: Do long division with decimals

How To: Find the perimeter & area of a complex figure

How To: Isolate a variable

How To: Normalize a data set into another scale

How To: Translate a shape

How To: Find the formula of a given sequence

How To: Calculate Faster Than a Calculator

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

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

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

How To: Do long division without a calculator

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

How To: Figure out and calculate sales tax

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

How To: Divide small numbers by big numbers

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

How To: Write a slopeintercept equation given an XY table

How To: Do long division with decimals

How To: Find the perimeter & area of a complex figure

How To: Isolate a variable

How To: Normalize a data set into another scale

How To: Translate a shape

How To: Find the formula of a given sequence

How To: Calculate Faster Than a Calculator
Be the First to Comment
Share Your Thoughts