| Places | Tens | Ones |
|---|---|---|
| 1 | ||
| Number | 1 | 8 |
| Rounded Number | 2 | 0 |
- 1 is in the tens place and 8 is in the ones place
- Since the digit in the ones place (8) is greater than or equal to 5, add 1 to the digit in the tens place (1)
- 1 + 1 = 2, so the digit in the tens place becomes 2
- 0 replaces the (8) in the ones place
- 18 rounded to the nearest ten = 20
