# Question #abbbc

##### 1 Answer

Sep 15, 2016

#### Explanation:

Significant figures include all digits of a measured quantity including the uncertain one.

The following are the rules on how to "count" significant figures:

- All nonzero digits are significant.

2.Zeros at the beginning of a number are never significant.

ex. 0.02 has only 1 significant figures; 0.0026 has 2 significant figures - Zeros at the end of a number are significant if the number contains a decimal point.

ex. 0.0200 has 3 significant figures; 3.0 has 2 significant figures - Zeros between nonzero digits are significant.

ex. 1.03 has 3 significant figures; 50007 has 5 significant figures

In calculations,

- Addition and subtraction:

The results should have the same number of decimal places as the measurement with the fewest decimal places. - Multiplication and division:

The results should have the same number of significant figures as the measurement with the fewest significant figures.

Hope this helps! :)