1286.4 is already to the closest tenth and could only be rounded to higher place points - like the ones, tens, hundreds or thousands.
10.44 rounded to the tenth = 10.4
It is then 56.5 when rounded to the nearest tenth
It is 0.8 when rounded to the nearest tenth
3.3
It is 5.2 when rounded to the nearest tenths.
6432
10.44 rounded to the tenth = 10.4
2 x 2 x 2 x 2 x 2 x 2 x 3 x 67 = 12864 or,26 x 31 x 671 = 12864
65.6
It is 4.2 when rounded to the nearest tenth
It is then 2461.8 when rounded to the nearest tenth
It is then 52.8 when rounded to the nearest tenth
It is then 56.5 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
It is 0.8 when rounded to the nearest tenth
It is already rounded to a tenth.