Round 0.1875 to the nearest hundredth

You round 0.1875 by the 7.

I learned, if it's 5 or lower you leave it the way it is. If it's 6 or higher, you round up 1. Therefore; your answer is 0.19

For example, (using your problem)

0. 1 8 7 5

Zero Ones tenths hundreds thousands

I get 0.1880, which we normally write as 0.188.