According to Wikipedia,

The **significant figures** (also known as the **significant digits**) of a number are digits that carry meaning contributing to its measurement resolution. This includes all digits *except*:^{}

- All leading zeros;
- Trailing zeros when they are merely placeholders to indicate the scale of the number (exact rules are explained at identifying significant figures); and
- Spurious digits introduced, for example, by calculations carried out to greater precision than that of the original data, or measurements reported to a greater precision than the equipment supports.

Nickzom Calculator computes the significant figures of any given number.

For Example: apply 3 significant figures to 123876 and apply 2 significant figures to 0.00009872.

First, you need to obtain the **Nickzom Calculator – The Calculator Encyclopedia** app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Significant Figures **under the **Mathematics** section

On clicking the page or activity to enter the values is displayed.

From the first example: **apply 3 significant figures to 123876
**It implies that the number is

**123876**and the number of significant figures to apply is

**3**.

Continue reading The Calculator Encyclopedia Computes the Significant Figures of a Number