3.5
0.5
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.
0.7
0.2
It is 2.2 when rounded to the nearest tenth
23.0
10.9
It then is 2.5 when rounded up to the nearest tenth
It is: 8.6 rounded up to the nearest tenth
It is then 90.7 when rounded up to the nearest tenth
It is: 5.3 rounded up to the nearest tenth
420.0
When rounded to the nearest tenth the answer is 0.2
You would round it down to the nearest tenth, 4.5.
1.0
3.5