Rounding is an essential skill that must be used throughout the study of mathematics. This Khan Academy video is the first in a series of three. It shows how to round the number 24,259 to the nearest hundred, using a number line.

When rounded up, the resource deserves a score of 100. Viewers of a short video learn how to round numbers to the nearest 100. After reviewing the concept, they first look at examples with whole numbers, then continue on to examples with...