The first numeral after the decimal place is tenths.
The second is hundredths, and the third is thousandths.
0.18 is already rounded up to the nearest thousandth; you can't round it up because there is no ten thousandths to round it up from.
Sorry; this is a little confusing.
To the nearest thousand: 2000 To the nearest thousandth: 2032.000
.333
90% = 0.900 to the nearest thousandth.
5.000
Standard rounding of 468 to the nearest thousandth: 0 (because 468 is smaller than 500. If it were bigger or equal to 500, then you'd need to round up). There are several other rounding techniques, for example in physics, it is often usual to round in a way that the relative error would be minimized (in that case, the answer would be 1000). Or stochastical rounding would non-deterministically either give 0 or 1000 (where 0 would have a chance of 46.8%, i.e. slightly smaller than the chance for 1000). But most probably the answer you're looking for is 0. All of that may be true to the nearest thousand. 468 is already rounded to the nearest thousandth, but may be written as 468.000
To the nearest thousandth: 4968.371
To the nearest THOUSANDTH it is 5536. To the nearest THOUSAND it is 6000.
To the nearest thousand: 2000 To the nearest thousandth: 1550.000
41275 to the nearest thousandth is 41275.000
It is already rounded to the nearest thousandth.
It is already to the nearest thousandth as 0.777
It is .524 rounded to the nearest thousandth
2.525
It is 32.406 when rounded to the nearest thousandth
It is 0.596 when rounded to the nearest thousandth
It is 1342.409 rounded to the nearest thousandth
round to the nearest ten thousandth 44.24862486