600 is already rounded to the nearest whole number, ten and hundred. To the nearest thousand, 600 rounds to 1000.
The answer will depend on the nearest WHAT!
591 rounded to the nearest hundreds is 600
600
600
600
600
It is 600 rounded to the nearest hundred
4 makes it round down, so it is 600 to the nearest ten. 04 makes it round down also, so it is also 600 to the nearest hundred.
600
600 rounds to1000 to the nearest thousand
551 rounded to the nearest 100 = 600
It is 600It is 600It is 600It is 600
600