Any number 499 or less rounds to zero. Any number 500 or greater rounds to 1000.
None. By definition a three digit number is greater than 99, whereas 64 is smaller. 064 is NOT a three-digit number.
501, 502, etc...
I'm greater than one million but less than ten million im an even number none of my digits are less than three no digit is used more than once the sum of the digits in the ones period is twelve the digit in the ten thousands place is equal to the sum of the digits in the tens an hundreds places the digit in the millions place is two more than the digit in the thousands place the digit in the hundred thousands place is twice the digit in the tens place what is the mystery number?
It is 3 which represents 300 = three hundred
The number is 385.
They are called "thousands".