# Rounding numbers, math worksheets, PDFs

Rounding numbers, Worksheets – PDF printable rounding up numbers math worksheets for children in: Pre-K, Kindergarten, 1st grade, 2nd grade, 3rd grade, 4th grade, 5th grade, 6th grade and 7th grade. These worksheets cover most rounding up numbers subtopics and are were also conceived in line with Common Core State Standards. Look through the links and simply click to print any worksheets you are interested in. Most worksheets have an answer key attached on the second page for reference. Learn the rules for rounding numbers, rounding decimals, estimating numbers etc.

# How to round up numbers

Rounding up is done by replacing a number by another value that is approximately equal but has a shorter, simpler or more explicit representation. For example, 39.69 replaced as 39.70. This is done to obtain a number that is easier to communicate than the original. It’s also used to avoid errors for example instead of 234 say around 230. To some extent, this method initiates errors in calculations. To round off decimals, find the place value of the rounding digit and look the digit right of the digit, if it is less than 5, do not change the rounding digit but drop all digits to the right of it. If that digit is more or equal to 5, add one to the rounding digit and drop all digits to the right of it. To round off whole numbers, find the place value of the rounding digit and look at the digit just to the right of it. if the digit is less than 5,do not change the rounding digit but change  all the digits to the right of the rounding digit to zero. If the digit is greater than or equal to 5, add one to the rounding digit and change all the digits to the right of the rounding digit to zero.