There's no such thing.
It doesn't make sense to talk about "the greatest real number smaller than a certain value", since it's undefined, and that's basically what you're asking for. 1,000,000.5 rounds to 1,000,001 (usually; in some instances it might be your answer, since in some fields the rounding rules say that .5 rounds to the even number).
However, using the usual rounding rules of "0.5 and higher round up, anything less rounds down," you can't specify a particular value.
100.49999999999999999999999999...
To the nearest million, 7,362,000 rounds to 7,000,000 .
749 rounded to the nearest hundred is 700
The answer depends on the extent of rounding. It could be 1349 to the nearest 900.
The answers depend on the extent of rounding. To the nearest 5000, they are 2501 and 7499.
100.49999999999999999999999999...
To the nearest million, 7,362,000 rounds to 7,000,000 .
Integers to the nearest hundred, 749.
749 rounded to the nearest hundred is 700
It is: 12.69 to two decimal places which rounds to 12.7 to the nearest tenth
The answer depends on the extent of rounding. It could be 1349 to the nearest 900.
The answers depend on the extent of rounding. To the nearest 5000, they are 2501 and 7499.
Any number can be rounded to the neaest million.
It is: 215 that rounds off to 220 to the nearest ten
It depends on whether you are rounding to the nearest integer, nearest ten, nearest 50, nearest 100 or something else.
The largest whole number that can be rounded down to 60 is 64, when rounding off the nearest ten.
0.54999...