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Inches and feet

July 23, 2020
by
Khan Academy
YouTube video player
Inches and feet

TL;DR

This video introduces the concepts of measuring length using inches and feet and provides examples of objects that would be measured in each unit.

Transcript

  • [Instructor] In this video, I'm going to introduce you to two units of measuring length. The first is the inch, which you might have heard about. And you're probably thinking, "How long is an inch?" Well, if you're familiar with a quarter, a quarter looks something like this. You see George Washington on it. A quarter is almost an inch. So an inc... Read More

Key Insights

  • 🤌 An inch can be visualized by comparing it to familiar objects like a quarter or the length of a thumb.
  • 🤌 A foot is made up of 12 inches and is commonly used for measuring larger objects.
  • 🦶 Objects that are larger in size, such as a swimming pool, should be measured in feet.
  • 🤌 Smaller objects, like a mouse, are best measured in inches.
  • 😬 The standard height of a basketball rim is 10 feet.
  • 🤌 The length of a piece of paper is typically 11 inches.
  • 💝 Feet can be abbreviated as "ft."

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Questions & Answers

Q: How long is an inch?

An inch can be compared to the size of a quarter or the length of a thumb. It is a relatively small unit of measurement, but it varies depending on the individual.

Q: How many inches are there in a foot?

There are 12 inches in one foot. This means that if you put 12 inches together, it would be equal to a foot.

Q: When should I measure an object in feet?

Objects that are larger in size, like a swimming pool, should be measured in feet. Feet are a more appropriate unit of measurement when dealing with longer distances.

Q: When should I measure an object in inches?

Smaller objects, such as a mouse or anything that is less than a foot in length, should be measured in inches. Inches are more suitable for measuring shorter distances.

Summary & Key Takeaways

  • The video introduces the inch as a unit of measurement, comparing it to the size of a quarter and the length of a thumb.

  • The concept of a foot is explained as a collection of 12 inches, with examples like the length of a shoe.

  • Examples of objects that should be measured in inches or feet, such as a piece of paper, a basketball rim, a swimming pool, and a mouse, are provided.


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