Rounding numbers is a concept that is often taught in the second grades through to the seventh grade and the size of numbers to be rounded. All rounding number worksheets are in PDF. If you don't have the reader, download it here first.

When a child struggles to round numbers, a grasp of place value is missing. Place value refers to the value of the digit depending on its place. For instance the one in the number 4126 is in the hundreds place. Children making errors in rounding usually need to step back and work on place value.