The largest integer that, when rounded to the nearest hundred, would round to 500, is 549.
500
500
549 rounded to the nearest ten is 550
It is 549 rounded to the nearest 100 is 500
549 rounded to the nearest hundred is 500.
Any from 450 to 549
The number is already rounded to a greater extent than that!
600
600
549.0
The number is 550. It is rounded up to 600, whereas the next smaller number 549 is rounded down to 500.