| Places | Tens | Ones | Tenths | Hundredths | Thousandths | Ten Thousandths | |
|---|---|---|---|---|---|---|---|
| 1 | |||||||
| Number | 3 | 8 | . | 9 | 7 | 2 | 1 |
| Rounded Number | 3 | 9 |
- 8 is in the ones place and 9 is in the tenths place
- Since the digit in the tenths place (9) is greater than or equal to 5, add 1 to the digit in the ones place (8)
- 1 + 8 = 9, so the digit in the ones place becomes 9
- The decimal point and the digits to the right of the ones place are dropped
- 38.9721 rounded to the nearest whole number (ones place) = 39
