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 already rounded to the nearest tenths.
19.125 rounded to nearest tenths is 19.1
Five rounded to the nearest tenths is 5.0
5.8
26.7
5.3
To the nearest ones = 8 To the nearest tenths = 8.0
7.0
98484.0
50.3
15.4