\(3.168\) is correct to three decimal places as there are \(3\) digits after the decimal point. If the number at the next decimal place is five or more add 1 to the previous decimal place ...

\(3.168\) is correct to three decimal places as there are three digits after the decimal point. If the number at the next decimal place is five or more add 1 to the previous decimal place ...

Discusses the importance of number systems, tracing their origins from early human counting methods using fingers to modern numeral systems. It explains the decimal system, place value ...

What people do—in fact what calculators do if you press the π button—is choose a certain number of decimal places, depending on the precision required, and round off to that number.

Its value is about 3.14159, but it is an irrational number, so its decimal representation goes on forever without repeating. Because Pi has an infinite number of decimal places, mathematicians are ...