- Determine the two consecutive multiples of 100 that bracket 6,721
- 6,721 is between 6,700 and 6,800
- 6,750 is the midpoint between 6,700 and 6,800
- As illustrated on the number line, 6,721 is less than the midpoint (6,750)
- Therefore, 6,721 rounded to the nearest hundred = 6,700
