- Since 8 is in the tenths place, 3.89 is between 3.8 and 3.9
- 3.85 is the midpoint between 3.8 (3.80) and 3.9 (3.90)
- As illustrated on the number line, 3.89 is greater than the midpoint (3.85)
- Therefore, 3.89 rounded to the nearest tenth (one decimal place) = 3.9
%20with%20a%20number%20line.png "3.89 rounded to the nearest tenth (one decimal place) with a number line")
