.3000
* * * * *
No.
First, the given number is 2673, NOT .2673
Being an integer it is already rounded to the nearest thousand.
If, the number in the question were 0.2673, then rounding it to the neraest thousand would give 0.267.
If you round to the nearest ten thousand, the answer is 0.3. After the rounding you cannot retain the trailing 0s.
8.924
2670
70.659
145 is rounded to the nearest ones. 145 rounded to the nearest thousandth is 145.000
287.287
.2673
8.924
It is 6.981 when rounded to the nearest thousandth
2670
34921.000
88.564
70.659
0.370
145 is rounded to the nearest ones. 145 rounded to the nearest thousandth is 145.000
174.689
8.246
287.287