- Determine the two consecutive multiples of 100 that bracket 9,999.9
- 9,999.9 is between 9,900 and 10,000
- 9,950 is the midpoint between 9,900 and 10,000
- As illustrated on the number line, 9,999.9 is greater than the midpoint (9,950)
- Therefore, 9,999.9 rounded to the nearest hundred = 10,000
