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.
round 90 to the nearest ten
110
110
100
372 rounded to the nearest hundred is 400
300
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.
100
100