To round to the nearest tenth, look at the hundredth digit to decide whether to round up or down; the hundredth digit of 0.57 is 7 which is 5 or more, so round up; thus:
0.57 is 0.6 to the nearest tenth.
0.60
It is 5.2 when rounded to the nearest tenths.
It is then 52.8 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 20.2 when rounded to the nearest tenth
It is 232.4 when rounded to the nearest tenth
It is 12.4 rounded to the nearest tenth
65.6
4.4
113.04 rounded to the nearest tenth is 113.0.
346.21 rounded to the nearest tenth is 346.2.
10775.9