# How do you use a calculator to evaluate the expression #log0.8# to four decimal places?

##### 1 Answer

Nov 2, 2017

Press the keys, enter, then round it to four (see explanation below)

You should get -0.0969

#### Explanation:

1) Find a scientific or graphics calculator & turn it on

2) press the

3) type in 0.8 (maybe with brackets around it)

4) press

Your calculator should now show -0.096910013

This is not to four decimal places!

To round to four, count 4 spaces after the decimal point. This is the 9:

Get rid of everything after it. (the digits are below 5 so you round down).