120.0
123.45 rounded to the nearest tenth is 120.
1.2
120.0
120.0
120
120 rounded to the nearest 10 is 120.
120
120
120
120
120
It is already rounded because it does not contain anything in the tenths place. For example, the 2 in 4.2 is in the tenths place. However, if you meant the nearest ten, then 120.