| Places | Ones | Tenths | Hundredths | Thousandths | |
|---|---|---|---|---|---|
| Number | 0 | . | 1 | 2 | 9 |
| Rounded Number | 0 | . | 1 |
- 1 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 (1) does not change
- The digits to the right of the tenths place are dropped
- 0.129 rounded to the nearest tenth (one decimal place) = 0.1
