- Determine the two consecutive multiples of 100 that bracket 6,643
- 6,643 is between 6,600 and 6,700
- 6,650 is the midpoint between 6,600 and 6,700
- As illustrated on the number line, 6,643 is less than the midpoint (6,650)
- Therefore, 6,643 rounded to the nearest hundred = 6,600
