To round the number 16.5 to the place of the underlined digit (which is the tenths place, represented by 6 in this case), you need to look at the digit to the right of the tenths place.
- Identify the digit in the tenths place (6 in the number 16.5).
- Look at the digit in the hundredths place (the digit to the right of 6 in 16.5, which is 5).
- Since the digit in the hundredths place (5) is 5 or greater, you round up.
Therefore, rounding 16.5 to the tenths place gives you:
17.0 (or just 17).