| Places | Hundreds | Tens | Ones | Tenths | Hundredths | Thousandths | Ten Thousandths | Hundred Thousandths | Millionths | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ||||||||||
| Number | 6 | 4 | 3 | . | 2 | 7 | 3 | 8 | 6 | 2 |
| Rounded Number | 6 | 4 | 3 | . | 3 |
- 2 is in the tenths place and 7 is in the hundredths place
- Since the digit in the hundredths place (7) is greater than or equal to 5, add 1 to the digit in the tenths place (2)
- 1 + 2 = 3, so the digit in the tenths place becomes 3
- The digits to the right of the tenths place are dropped
- 643.273862 rounded to the nearest tenth (one decimal place) = 643.3
