300
100 100
7675 rounded to the nearest 100 is 7700.
To round 97 to the nearest 100, you need to look at the digit in the tens place, which is 9 in this case. Since 9 is greater than or equal to 5, you will round up. Therefore, 97 rounded to the nearest 100 is 100.
200
372 rounded to the nearest hundred is 400
300
45 + 39 = 84, so if you want to round to the nearest ten, that's 80, or nearest hundred is 100. Otherwise, it doesn't turn out to a decimal, so it doesn't need rounding to the nearest one.
100 100
100
100
10100
500
4198 to the nearest 100 = 4200
7675 rounded to the nearest 100 is 7700.
The answer is zero.
It is: 50