All its digits are decimal digits so the question makes no sense.
4.5
35.6
145 is rounded to the nearest ones. 145 rounded to the nearest thousandth is 145.000
0.17241 is, itself, a decimal.
rounded to 1 decimal place it is 24.7
1.0
500
2.53 rounded to the nearest decimal place is 2.5 2.53 rounded to the nearest decimal place is 2.5
42.8
9.3 rounded to the nearest decimal number is 9.3
5.7 rounded to the nearest decimal place would be 6.
0
4.71 rounded to the nearest decimal value would be 4.7.
Rounded to one decimal place it is 2.1
There is no such thing as the "nearest decimal place".
35.6
145 is rounded to the nearest ones. 145 rounded to the nearest thousandth is 145.000
The decimal 82.2 is 82 when rounded to the nearest point.