- Determine the two consecutive multiples of 100 that bracket 40,438
- 40,438 is between 40,400 and 40,500
- 40,450 is the midpoint between 40,400 and 40,500
- As illustrated on the number line, 40,438 is less than the midpoint (40,450)
- Therefore, 40,438 rounded to the nearest hundred = 40,400
