- Determine the two consecutive multiples of 1,000 that bracket 18,436
- 18,436 is between 18,000 and 19,000
- 18,500 is the midpoint between 18,000 and 19,000
- As illustrated on the number line, 18,436 is less than the midpoint (18,500)
- Therefore, 18,436 rounded to the nearest thousand = 18,000
