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Lesson 6: Intro to absolute value

# Absolute value review

Review absolute value, and try some practice problems.

## What is absolute value?

The absolute value of a number is its distance from $0$.
Example: positive number
The absolute value of $4$ is $4$:
Example: negative number
The absolute value of $-4$ is also $4$:
$4$ and $-4$ are the same distance from $0$, so they have the same absolute value of $4$.

## The absolute value symbol

The symbol for absolute value is a bar $|$ on each side of the number.
Example:
"The absolute value of $-3.2$" can be written $|-3.2|$.

## Practice

Problem 1
What is $|5|$?

Want to try more problems like this? Check out these exercises: Finding absolute value
Comparing absolute values

## Want to join the conversation?

• Is it possible for a decimal number to have absolute value?
• Of course! There cna be an absolute value for any number
• How is the last question on the review not equal?
• Absolute values are never negative. So the absolute value of 9 can never be equal to negative 9.
If you look just below the "check" button, you'll see the word "explain". If you click on that, you'll see a more detailed explanation.
• Is there such thing as a "negative zero?"
• No, zero is a neutral number so it can't be positive or negative.
• What are absolute values in the real world😎😎😎
• One of the videos talked about how a table leg should be 150 milliliters wide with and absolute deviation of say 2.5. Then, you would use absolute value
• Math Problems (get this right and I’ll upvote u if I can)
I-439I
I24329l
I0I
I-2I
I23.5I
I-28I
• 439
24329
0
2
23.5
28
• Is absolute value the opposite of a number. What I mean by this is that if a number was positive, it would be a negative? I am very puzzled by this.
• No. Absolute value is always positive. Since it's the distance a number is from 0, it would always be positive. So, the absolute value of positive 5, would be positive 5. You can apply this to physics too. In one dimensional motion, to the left would be negative displacement, and to the right would be positive displacement, but simply moving without specifying a direction would merely be distance, which is always positive.