# How do you use a calculator to find sqrt68.1 to the nearest hundredth?

Oct 19, 2016

$8.252272 \ldots \approx 8.25$

#### Explanation:

To the nearest 'hundredth' is the same as saying
'Round off to two decimal places'

TO do this you first have to determine the answer with a calculator to at least 3 decimal place.

$\sqrt{68.1} = 8.2 \textcolor{red}{5} 227. . .$

The rounding will happen at the 5. It will either stay 5 or round up to 6, depending on the next digit which is a 2.
The 2 is below 5, so the answer rounds down to give:

$8.25$