- Determine the two consecutive multiples of 100 that bracket 12,345
- 12,345 is between 12,300 and 12,400
- 12,350 is the midpoint between 12,300 and 12,400
- As illustrated on the number line, 12,345 is less than the midpoint (12,350)
- Therefore, 12,345 rounded to the nearest hundred = 12,300
