5.000
To round 9.333333333 to the nearest thousandth, we look at the digit in the thousandth place, which is 3. Since the digit immediately to the right is 3, which is less than 5, we do not need to round up. Therefore, 9.333333333 rounded to the nearest thousandth is 9.333.
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.
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
52.0
78.5
8.924
It is 6.981 when rounded to the nearest thousandth
34921.000
70.659
88.564
0.370
145 is rounded to the nearest ones. 145 rounded to the nearest thousandth is 145.000
0.660
800.130
174.689
9.375
16526.000