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Significant Figures

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In many instances exact numbers are not necessary or even desirable. In those circumstances approximations are given. Numbers can be approximated to a given number of significant figures (s.f.).

The following diagram shows how to determine the number of significant figures in a given number. Scroll down the page for more examples and solutions using significant figures.

Significant Figures

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Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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