- Since 9 is in the tenths place, 21.9911 is between 21.9 and 22.0
- 21.95 is the midpoint between 21.9 (21.90) and 22.0 (22.00)
- As illustrated on the number line, 21.9911 is greater than the midpoint (21.95)
- Therefore, 21.9911 rounded to the nearest tenth (one decimal place) = 22.0
%20with%20a%20number%20line.png "21.9911 rounded to the nearest tenth (one decimal place) with a number line")
