0
Chat with our AI personalities
When we look at rounding a number, we want to look at the number just to its right. All of the numbers to the left will remain the same. So right now, we have the first two digits, 21. The hundreds can be either an 8 or a 9 depending on whats in the tens position. If the number in the tens position is 5 or greater we round up to 9. If it's lower, we round down to 8. The number in the tens position is an 8, so we round up. We now have 3 digits, 21,9. We now just fill in the remaining places with zeroes, so we end up with 21,900.
2130000021300000
700
21
21.3 rounded to the nearest whole number = 21
Oh honey, 421 rounded to the nearest hundred is 400. It's not rocket science, just chop off those last two digits and call it a day. Math doesn't have to be a headache, darling.