406 rounded to the nearest hundred would be 400. When rounding a number to the nearest hundred, you look at the digit in the tens place. If it is 5 or greater, you round up; if it is less than 5, you round down. In this case, the digit in the tens place is 0, so we round down to the nearest hundred, which is 400.
406 is already an integer. So the answer is 406.
It is 300 when rounded to the nearest hundred
916 rounded to the nearest hundred is 900
0
It is already rounded to the nearest hundred thousandths. Rounded to the nearest thousands would be 87.381.
0
0
678 is rounded nearest hundred is 700
0
10900
500
3300