Oh, dude, rounding 605 to the nearest hundred is like deciding which fast food joint to hit up after a night out. You just look at the digit in the hundreds place, which is 6, and since 5 is closer to 0 than 100, you round down to 600. It's like choosing between a burger and a salad – easy peasy!
It is 300 when rounded to the nearest hundred
916 rounded to the nearest hundred is 900
5800
0
It is already rounded to the nearest hundred thousandths. Rounded to the nearest thousands would be 87.381.
0
10000
0
0
678 is rounded nearest hundred is 700
10900
500