Round 7.824 to the nearest hundredth

So,

First, look at the number 3 places to the right of the decimal point.  Note that it is below 5.

If the number is below 5, round down.  If the number is 5 or greater, round up.

In this case, the number is below 5, so round down.

7.824 ---> 7.82

Hnmmmn not sure