- Determine the two consecutive multiples of 1,000 that bracket 678,210
- 678,210 is between 678,000 and 679,000
- 678,500 is the midpoint between 678,000 and 679,000
- As illustrated on the number line, 678,210 is less than the midpoint (678,500)
- Therefore, 678,210 rounded to the nearest thousand = 678,000
