| Places | Tens | Ones | Tenths | Hundredths | Thousandths | |
|---|---|---|---|---|---|---|
| Number | 2 | 1 | . | 4 | 2 | 9 |
| Rounded Number | 2 | 1 | . | 4 |
- 4 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 (4) does not change
- The digits to the right of the tenths place are dropped
- 21.429 rounded to the nearest tenth (one decimal place) = 21.4
