- Since 4 is in the tenths place, 6.431 is between 6.4 and 6.5
- 6.45 is the midpoint between 6.4 (6.40) and 6.5 (6.50)
- As illustrated on the number line, 6.431 is less than the midpoint (6.45)
- Therefore, 6.431 rounded to the nearest tenth (one decimal place) = 6.4
%20with%20a%20number%20line.png "6.431 rounded to the nearest tenth (one decimal place) with a number line")
