- Since 6 is in the tenths place, 81.64 is between 81.6 and 81.7
- 81.65 is the midpoint between 81.6 (81.60) and 81.7 (81.70)
- As illustrated on the number line, 81.64 is less than the midpoint (81.65)
- Therefore, 81.64 rounded to the nearest tenth (one decimal place) = 81.6
%20with%20a%20number%20line.png "81.64 rounded to the nearest tenth (one decimal place) with a number line")
