323.3.
In the number 323.31 the digit in the tenths column is the "3" after the decimal point. To round this digit, we look at the digit to its immediate right. We then ask if this digit is equal to or greater than 5. If it is we round up. If it is not we round down. Here, the digit is a "1". This is less than "5" and so we round down.
Thus to the nearest tenth this number is 323.3.
It is 232.4 when rounded to the nearest tenth
It is then 20.2 when rounded to the nearest tenth
10.5
33.8
79.4
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 232.4 when rounded to the nearest tenth
It is then 20.2 when rounded to the nearest tenth
It is 0.8 when rounded to the nearest tenth
4.4
10775.9
2.7
54.4
28.6