5 1/6 as a decimal number rounded to the nearest hundredth ... I'm horrible at fractions.

First change 5 1/6 to an improper fraction which would be 31/6.

Once you have this number, remember that a fraction line just means to divide. So type into the calculator 31 divided by 6.

The answer will be 5.166667

So round that to 5.17 and there's your answer.