- Determine the two consecutive multiples of 10 that bracket 1.65
- 1.65 is between 0 and 10
- 5 is the midpoint between 0 and 10
- As illustrated on the number line, 1.65 is less than the midpoint (5)
- Therefore, 1.65 rounded to the nearest ten = 0

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