the presentation of the valve of the business in figure form.
http://wiki.answers.com/Q/What_is_the_importance_o...

Mathematics is important because it is a part of virtually every area of our lives. On the most basic level, you need to know math in order to be able to understand how to count money
http://answers.ask.com/Science/Other/why_is_mathem...

Approximation or estimation applies primarily to problems dealing with quantities and measurements. The estimation process has a practical use in finding solutions to realworld problems
http://www.ehow.com/info_8719640_estimationimport...

My top dozen candidates that are relatively easy for nonmathematicians to understand (this would probably change if I thought about it more... and this is in no particular order)
http://www.quora.com/Mathematics/Whatarethemost...
