How do you round to the nearest Hundred Million?

Answer 1

To round a number to the nearest hundred million, you need to look at the digit in the hundred million place. If the digit to the right of the hundred million place is 5 or greater, you round up; if it is less than 5, you round down. Replace all digits to the right of the hundred million place with zeros. For example, if you have the number 987,654,321 and you want to round it to the nearest hundred million, you would look at the digit "9" in the hundred million place. Since the digit to the right of it is 8 (greater than 5), you would round up to 1,000,000,000.

Answer 2

Sometimes it is advantageous to express a value in round numbers. To round to a particular place, look at the digit immediately to the right of the one you want to round to, in this case, the ten millions place. If that digit is 4, 3, 2, 1 or 0, zero it and everything to the right of it out. If that digit is 5, 6, 7, 8 or 9, increase your target digit by one and zero everything to the right of it out. If your target digit is 9, it will become a zero and increase the digit to the left of it by one.