- Since 2 is in the tenths place, 10.21 is between 10.2 and 10.3
- 10.25 is the midpoint between 10.2 (10.20) and 10.3 (10.30)
- As illustrated on the number line, 10.21 is less than the midpoint (10.25)
- Therefore, 10.21 rounded to the nearest tenth (one decimal place) = 10.2
%20with%20a%20number%20line.png "10.21 rounded to the nearest tenth (one decimal place) with a number line")
