- Determine the two consecutive multiples of 100 that bracket 42,279
- 42,279 is between 42,200 and 42,300
- 42,250 is the midpoint between 42,200 and 42,300
- As illustrated on the number line, 42,279 is greater than the midpoint (42,250)
- Therefore, 42,279 rounded to the nearest hundred = 42,300
