Khan Academy: Comparing Lengths

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

Learn how to use a ruler to compare the lengths of different objects such as rectangles and triangles. [3:06]

Sal estimates the length of an object when given the length of another object. Includes a video, transcript, and question and answer section. [2:02]

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 compares 394 and 397 and then writes the expression using < or >. Includes a video, transcript, and question and answer section. [2:04]

In this exercise, students practice their place value understanding by comparing multi-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Sal uses a number line to compare numbers less than or equal to 10. Includes a video, transcript, and question and answer section. [1:30]

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]

Lindsay compares fractions with the same denominator. She compares one pair of fractions with visuals and another pair without visuals.