- Since 7 is in the tenths place, 3.78 is between 3.7 and 3.8
- 3.75 is the midpoint between 3.7 (3.70) and 3.8 (3.80)
- As illustrated on the number line, 3.78 is greater than the midpoint (3.75)
- Therefore, 3.78 rounded to the nearest tenth (one decimal place) = 3.8
%20with%20a%20number%20line.png "3.78 rounded to the nearest tenth (one decimal place) with a number line")
