What is 5.215 rounded to the nearest hundredth?

Answer 1

5.22

Answer 2

The number 5.215 is exactly half-way between 5.21 and 5.22. So you have to decide whether to round up or round down.

Which way you go will depend on the rules in operation: in other words, where you are, why you are rounding, and what the policy is.

In the absence of any other rule, it is normal to round up (in this case to 5.22).

This is what, for example, the spreadsheet program Excel does by default. If you want to round down in Excel, you use a particular built-in function.