- Determine the two consecutive multiples of 1,000 that bracket 45,439
- 45,439 is between 45,000 and 46,000
- 45,500 is the midpoint between 45,000 and 46,000
- As illustrated on the number line, 45,439 is less than the midpoint (45,500)
- Therefore, 45,439 rounded to the nearest thousand = 45,000
