- Since 4 is in the tenths place, 31.455 is between 31.4 and 31.5
- 31.45 is the midpoint between 31.4 (31.40) and 31.5 (31.50)
- As illustrated on the number line, 31.455 is greater than the midpoint (31.45)
- Therefore, 31.455 rounded to the nearest tenth (one decimal place) = 31.5
%20with%20a%20number%20line.png "31.455 rounded to the nearest tenth (one decimal place) with a number line")
