The answer depends on the units used for the given quantity. It should be plainly obvious to anybody that the answer for 6.75 miles will be very different from that for 6.75 furlongs. So, without any information about the units for the given quantity, it is not possible to give a sensible answer.
675
It is: 700
674.75 rounded to the nearest whole number = 675
700
468,675 rounded to the nearest hundreds is 468,700
675
It is: 700
674.75 rounded to the nearest whole number = 675
700
468,675 rounded to the nearest hundreds is 468,700
680
It is 900 when rounded to the nearest ten.
680
870
To round 675 to the nearest hundred, we look at the digit in the tens place, which is 7. Since 7 is greater than or equal to 5, we round up the hundreds place by adding 1. Therefore, 675 rounded to the nearest hundred is 700.
Oh honey, 674 rounded off to the nearest ten is 670. Just drop those last two pesky digits like they're hot and you're good to go. Keep it simple, ain't nobody got time for that extra math drama.
490