Half of 100 is 50, so the smallest number that rounds to 400 to the the nearest hundred is 400 - 50 = 350.
349
It could be 599, rounded to the nearest 400.
400
It rounds to 400
401 rounds to 400.
It rounds to 300
If rounding to the nearest 100, then 432 rounds to 400, but it is not particularly close.
400
It's already there.
well it matters what are the numbers that you want to see if it rounds to 400 but any thing like 350.00 to 400 you would round to 400 or 430.00 to 400 you would round to 400 also
451though 450 is in middle,so if rounding up then 450 answer449 rounds down to 400