- Determine the two consecutive multiples of 10 that bracket 1,623
- 1,623 is between 1,620 and 1,630
- 1,625 is the midpoint between 1,620 and 1,630
- As illustrated on the number line, 1,623 is less than the midpoint (1,625)
- Therefore, 1,623 rounded to the nearest ten = 1,620
