| Places | Ones | Tenths | Hundredths | Thousandths | Ten Thousandths | |
|---|---|---|---|---|---|---|
| 1 | ||||||
| Number | 0 | . | 3 | 4 | 3 | 9 |
| Rounded Number | 0 | . | 3 | 4 | 4 |
- 3 is in the thousandths place and 9 is in the ten thousandths place
- Since the digit in the ten thousandths place (9) is greater than or equal to 5, add 1 to the digit in the thousandths place (3)
- 1 + 3 = 4, so the digit in the thousandths place becomes 4
- The digit in the ten thousandths place is dropped
- 0.3439 rounded to the nearest thousandth (three decimal places) = 0.344
