| Places | Tens | Ones | Tenths | Hundredths | Thousandths | |
|---|---|---|---|---|---|---|
| 1 | ||||||
| Number | 5 | 1 | . | 1 | 2 | 9 |
| Rounded Number | 5 | 1 | . | 1 | 3 |
- 2 is in the hundredths place and 9 is in the thousandths place
- Since the digit in the thousandths place (9) is greater than or equal to 5, add 1 to the digit in the hundredths place (2)
- 1 + 2 = 3, so the digit in the hundredths place becomes 3
- The digit in the thousandths place is dropped
- 51.129 rounded to the nearest hundredth (two decimal places) = 51.13
