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Lesson 6: Intro to absolute value

# Meaning of absolute value

Absolute value is a fundamental math concept that measures the distance of a number from zero, regardless of its sign. It's always a positive value, as it represents the magnitude of a number without considering its direction. This concept is useful in real-world applications, such as calculating distances and comparing heights. Created by Sal Khan.

## Want to join the conversation?

• this is way too easy

• it is a video
• did anyone else do the drumroll??
• No, I didn't do it cuz its kinda dumb.
(1 vote)
• in the cruise ship example, the sea level would be 0 and then the negative is below sea level and positive number is above sea level or does that mean something else
• I believe so. That makes sense to me. However, I could be wrong. I would go with that though, personally! Hope this kinda sorta answered and also my apologies for not answering this sooner. :)
• I STILL don´t understand
• Skill issue
(1 vote)
• Hi elijah!
• I still do not understand the purpose of absolute value. So far, the examples do not show a need to use this function. No one puts a number line on paper and goes, oh, the school is at 0, and you are at negative three, so absolute value.....bro, you check how far it is.
• What does the | | in absolute value mean?
e.g. |-2|
• when there is a line on either side of a number, like your example |-2| it means to take the absolute value, so |-2| = 2 and |2| = 2 I like to think of it as saying, "Hey if there's a negative between these lines, it's not really a negative, it's a positive number now."