- Determine the two consecutive multiples of 10 that bracket 12,489
- 12,489 is between 12,480 and 12,490
- 12,485 is the midpoint between 12,480 and 12,490
- As illustrated on the number line, 12,489 is greater than the midpoint (12,485)
- Therefore, 12,489 rounded to the nearest ten = 12,490
