Khan Academy: Estimating Lengths

Video lesson provides practice with estimating the length of an object when given the length of another object. [2:02]

Sal uses a ruler to compare the lengths of different objects. Includes a video, transcript, and question and answer section. [3:06]

Watch how to measure an object with same-size length units that span it with no gaps or overlaps. Includes a video, transcript, and question and answer section. [4:07]

Sal uses different units, standard and non-standard, to measure the same object. Includes a video, transcript, and question and answer section. [2:53]

Sal demonstrates how to use a ruler while measuring various objects in centimeters and meters. Includes a video, transcript, and question and answer section. [4:39]

Sal estimates lengths using units of inches, feet, centimeters, and meters. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, or receive hints.

Practice estimating the length of real life objects using metric units. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice estimating the length of real life objects using US customary units. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice rounding decimals. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice comparing lengths. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.