How do you use a calculator to evaluate the expression #log0.8# to four decimal places?
Press the keys, enter, then round it to four (see explanation below)
You should get -0.0969
1) Find a scientific or graphics calculator & turn it on
2) press the
3) type in 0.8 (maybe with brackets around it)
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).