| Places | Hundreds | Tens | Ones |
|---|---|---|---|
| 1 | |||
| Number | 6 | 3 | 6 |
| Rounded Number | 6 | 4 | 0 |
- 3 is in the tens place and 6 is in the ones place
- Since the digit in the ones place (6) is greater than or equal to 5, add 1 to the digit in the tens place (3)
- 1 + 3 = 4, so the digit in the tens place becomes 4
- 0 replaces the (6) in the ones place
- 636 rounded to the nearest ten = 640
