- Determine the two consecutive multiples of 100 that bracket 4,120
- 4,120 is between 4,100 and 4,200
- 4,150 is the midpoint between 4,100 and 4,200
- As illustrated on the number line, 4,120 is less than the midpoint (4,150)
- Therefore, 4,120 rounded to the nearest hundred = 4,100
