Oh, dude, rounding 72 to the nearest hundred? That's like trying to find a parking spot in a crowded mall on a Saturday. You just look at the tens place, which is a big ol' 7, and since it's closer to 100 than 0, you round up to 100. Easy peasy, lemon squeezy.
72 is already "the nearest whole number", no need for any rounding. The answer is: 72.
100.
95,96,97,98,99 round them up to the ten, all 100 to the 100, all 100.
To round 95 to the nearest ten, you would round it down to 90.
170 is already at the nearest ten. It will round up to 200 to be to the nearest 100.
100
100
72 is already "the nearest whole number", no need for any rounding. The answer is: 72.
372 rounded to the nearest hundred is 400
Since 72 is an integer, it is already rounded to the nearest fractional part.
300
645 rounded to the nearest ten would simply be 650.
That rounds to zero.
Oh, dude, rounding 100 to the nearest 10 is a piece of cake! You just look at the digit in the tens place, which is 0, and since it's right in the middle, you round up to the nearest 10, which is 100! Easy peasy, lemon squeezy!
100
10100
4198 to the nearest 100 = 4200