- Determine the two consecutive multiples of 10 that bracket 843
- 843 is between 840 and 850
- 845 is the midpoint between 840 and 850
- As illustrated on the number line, 843 is less than the midpoint (845)
- Therefore, 843 rounded to the nearest ten = 840

The solution above and other related solutions were provided by the Round to the Nearest Ten with a Number Line Application.