Rounding Numbers.
(1) Underline the number that is in the place that you want to round
(2) Look at the number on the right of the underlined number.
* If it’s 5 or more, add one more to the underlined number.
* If it’s 4 or less, keep the underlined number the same.

(3) Numbers on the left stay the same and numbers on the right became zeros.


Ex. Round to the nearest hundreds




We use the symbol ≈ when rounding.  Read it as “is approximately” or “is about”.

Three thousand two hundred seventy-eight  is approximately three thousand three hundred 


Rounding whole numbers (to the nearest ten, hundred, thousand)