# How do you determine the number of significant figures if a number does not have a decimal place?

##### 1 Answer

Jun 25, 2017

#### Answer:

It's normally determined by the first and last non-zero digit, but can be otherwise indicated...

#### Explanation:

By default, the number of significant figures is the number of digits in the run from the first non-zero digit to the last.

For example:

#200340000#

has

If you are given a number like

One convention that is sometimes used is to indicate the last significant digit with an overbar or underbar, e.g.

#80bar(0)00#

#80underline(0)00#

These examples have