1.8 does not extend further than the tenths place; therefore, it cannot be rounded to the tenths place.
18.6
18.0
It is 232.4 when rounded to the nearest tenth
It is then 56.5 when rounded to the nearest tenth
It is 0.8 when rounded to the nearest tenth
It is then 52.8 when rounded to the nearest tenth
It is then 20.2 when rounded to the nearest tenth
18.0
4.4
3451.0
346.21 rounded to the nearest tenth is 346.2.
61.52 rounded to nearest tenth = 61.5