- Determine the two consecutive multiples of 1,000 that bracket 578,115
- 578,115 is between 578,000 and 579,000
- 578,500 is the midpoint between 578,000 and 579,000
- As illustrated on the number line, 578,115 is less than the midpoint (578,500)
- Therefore, 578,115 rounded to the nearest thousand = 578,000
