| Places | Thousands | Hundreds | Tens | Ones | Tenths | |
|---|---|---|---|---|---|---|
| 1 | ||||||
| Number | 1 | 3 | 9 | 8 | . | 5 |
| Rounded Number | 1 | 3 | 9 | 9 |
- 8 is in the ones place and 5 is in the tenths place
- Since the digit in the tenths place (5) 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 digit in the tenths place are dropped
- 1,398.5 rounded to the nearest whole number (ones place) = 1,399
