**In this module, you can ****study what a significant figure is and how to round numbers to a significant figure.**

Directions: Use any combination of the resources below in any order you wish or click here for detailed instructions.

If you're having problems with any of the links from DIY Maths, please make sure your browser is current, cookies are enabled, and that you have the current version of Adobe Acrobat, Flash and Java. You might also need the current versions of QuickTime Player and Windows Media Player if you're viewing videos.

- Read about significant figures and roundingRead about significant figures (called significant digits on this website) and rounding at purplemath.com.

The number of significant figures in a number is not necessarily the same as the number of decimal places. The number ".1503" has four significant figures, while this number ".00932" has only three.

**Study and practice**

- Download a significant figure rules sheetPrint a sheet of rules for finding significant figures.
- Download a significant figure workhseetDesign and print a worksheet for identifying significant figures at math-aids.com.
- Quiz yourself on significant figuresQuiz yourself on significant figures with this fifteen-question quiz.

Use these search terms to find additional resources:

*significant figuresignificant digitround to significant figure*