- Determine the two consecutive multiples of 100 that bracket 3,243
- 3,243 is between 3,200 and 3,300
- 3,250 is the midpoint between 3,200 and 3,300
- As illustrated on the number line, 3,243 is less than the midpoint (3,250)
- Therefore, 3,243 rounded to the nearest hundred = 3,200
