- Determine the two consecutive multiples of 100 that bracket 31,931
- 31,931 is between 31,900 and 32,000
- 31,950 is the midpoint between 31,900 and 32,000
- As illustrated on the number line, 31,931 is less than the midpoint (31,950)
- Therefore, 31,931 rounded to the nearest hundred = 31,900
