The tenths place within a decimal is the first number to the right of a decimal. Let's look at our tenths place.
6 is in our tenths place. To determine whether or not to round up or down in the tenths place, we need to look at the hundredths place for a 5 or higher.
2 is in our hundredths place, so we cannot round up. We will round down to 1.6.
1.6 is 1.625 rounded to the nearest tenth.
I hope this helps!