It is 5.6
285.0
77 would be rounded up to 80 if you were asking for the tens place. Don't confuse tens with tenths. 77 rounded to the nearest tenth place is 77.
It is: 18.2
610
1387220
It is 4.2 when rounded to the nearest tenth
It is already rounded to the tenth place as 0.2
32.2
It is 62.1 to the nearest tenth place
It is: 21498.3 rounded to the tenth place
576.0
338.4
It is 5.6
9.8
10.0
It is: 0.6