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

The number of significant figures in a number is not the same as the number of decimal places.

The number "0.1503" has four significant figures, while this number "0.00932" has only three.

**Study and practice**

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

0.00 min addition (+), subtraction (-), multiply (x), divide (÷)

1.19 min decimal point

2.43 min C, CE and backspace

4.19 min square, square root & fractions

6.17 min percentage (%)