- Determine the two consecutive multiples of 100 that bracket 9,139
- 9,139 is between 9,100 and 9,200
- 9,150 is the midpoint between 9,100 and 9,200
- As illustrated on the number line, 9,139 is less than the midpoint (9,150)
- Therefore, 9,139 rounded to the nearest hundred = 9,100
