Well, isn't that just a happy little math problem! To round 109 to the nearest 100, we look at the digit in the tens place, which is 0. Since 0 is less than 5, we keep the hundreds place the same and change the tens and ones places to 0. So, 109 rounded to the nearest 100 is 100. Remember, there are no mistakes in rounding, just happy little accidents!
110
109 dollars.
1,499,999,999 will round to the nearest billion to get 1091,000,499,999 will round to the nearest million to get 109, and so on.
100
110
110
372 rounded to the nearest hundred is 400
300
100
4198 to the nearest 100 = 4200
10100
The answer is zero.