Units of length

A mile is a long distance, but just how long is it? "Miles" are part of the Customary system, and we use it to measure length. Join us in this lesson about length, as we look at units like "inches", "feet", "yards", and "miles". We'll solve some fun problems about length, and even a cool riddle: "What has three feet, but no legs?" Join us to find out!

Standards addressed

CCSS.MATH.CONTENT.4.MD.A.1

Know relative sizes of measurement units within one system of units including km, m, cm; kg, g; lb, oz.; l, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit. Record measurement equivalents in a two-column table. For example, know that 1 ft is 12 times as long as 1 in. Express the length of a 4 ft snake as 48 in. Generate a conversion table for feet and inches listing the number pairs (1, 12), (2, 24), (3, 36), ...

Units of length

Key takeaways

Standards addressed

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Measurement - 4th grade