- Since 1 is in the tenths place, 2.1539461 is between 2.1 and 2.2
- 2.15 is the midpoint between 2.1 (2.10) and 2.2 (2.20)
- As illustrated on the number line, 2.1539461 is greater than the midpoint (2.15)
- Therefore, 2.1539461 rounded to the nearest tenth (one decimal place) = 2.2
%20with%20a%20number%20line.png "2.1539461 rounded to the nearest tenth (one decimal place) with a number line")
