الاثنين، 25 أغسطس 2014
Significant figures
Sometimes we do not always need to give detailed answers to problems - we just want a rough idea. When we are faced with a long number, we could round it off to the nearest thousand, or nearest million. And when we get a long decimal answer on a calculator, we could round it off to a certain number of decimal places.
Another method of giving an approximated answer is to round off usingsignificant figures.
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