Round 658 to the nesrest hunderd?

Answer 1

658 rounded to nearest 100 is 700

To round on a digit, look at the next digit to the right, the deciding digit. If this is less than 5, leave the digit alone, otherwise (if it is 5 or more) add one to the digit. Then replace the deciding digit and all the digits to its right by zero.

So for 658, rounding on the 100s, the 6 is being rounded, so the deciding digit is the next to the right which is the 5. It is 5 or more, so add one to the 6; replace the deciding digit and all the digits to its right by zero: 658 -> 700.