5.0
5.0
The digit in the tenths column is the first "9" here. This must be rounded up to "0" as the digit to its immediate right (the second "9") is equal to or greater than "5". As this rounds up to "0" this means we have to round the "4" up to a "5" also.
499.0
15.0
0
It is 5.2 when rounded to the nearest tenths.
65.6
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 12.4 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
4.4