- Determine the two consecutive multiples of 100 that bracket 18,399
- 18,399 is between 18,300 and 18,400
- 18,350 is the midpoint between 18,300 and 18,400
- As illustrated on the number line, 18,399 is greater than the midpoint (18,350)
- Therefore, 18,399 rounded to the nearest hundred = 18,400
