These possible numbers are close to the number that you’re rounding to, but have zeros in the digits to the right. If you are rounding 186 to the nearest ten, then 180 and 190 are the two possible num...These possible numbers are close to the number that you’re rounding to, but have zeros in the digits to the right. If you are rounding 186 to the nearest ten, then 180 and 190 are the two possible numbers to round to, as 186 is between 180 and 190. You can determine where to round without using a number line by looking at the digit to the right of the one you’re rounding to. Now that you know how to round to the nearest ten, hundred, and thousand, try rounding to the nearest ten thousand.