| Places | Tens | Ones | Tenths | Hundredths | Thousandths | Ten Thousandths | Hundred Thousandths | Millionths | |
|---|---|---|---|---|---|---|---|---|---|
| Number | 1 | 7 | . | 7 | 2 | 1 | 5 | 1 | 9 |
| Rounded Number | 1 | 7 | . | 7 |
- 7 is in the tenths place and 2 is in the hundredths place
- Since the digit in the hundredths place (2) is less than 5, the digit in the tenths place (7) does not change
- The digits to the right of the tenths place are dropped
- 17.721519 rounded to the nearest tenth (one decimal place) = 17.7
