Absolute value and number lines | Negative numbers and absolute value | Pre-Algebra | Khan Academy

One easy way to think of absolute value is the distance it is from zero. To do that, a number line comes in handy. Watch and learn.

Missed the previous lesson?

Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.

For free. For everyone. Forever. #YouCanLearnAnything

[theprominer]

This is very helpful and easy to understand!! Thanks!! :)

[bagel]

Thank you so much for making it easy to understand

[UFH]

i never did understand this. Although i know it as modulus and not absolute value. Thanks Sal. I fully understand this now.

[Peter_]

I understand what you mean, my teacher explained absolute values as "well if it's a positive number you keep it that way and if it's a negative number you make it positive".
What the hell kind of explanation is that? x_x

[ayanaefendi]

Thank you so so much you helped me a lot!

[qudratabdullayev]

Khan academy's lessons are giving me hope

[maryrosellegomez]

Thank you somuch this helps me a lot cuz im confused with these

[taeveonsoawesome]

We doing this in class and we have a quiz tomorrow and I'm freaking out😮😮😨

[laurenburkett]

this helped so much thank you keep doing these videos please!!! :)

[azatica]

I LOVE THIS PERSON HE IS LIKE A GINEIS 😄😄😄😮😮😮🙋👂👍👌🎓🎓🏆🏆🏁🔱

[samayoa]

Sal sounds like Bill Cosby in this youtube.

[thexmasterxgamer]

How can I make it clear which is which when I need to put it on one number line?

[danielschenk]

Stop reading comments go back to studying

[goldera]

Can you make mobile legend gameplay video😂

[FlameZ]

Google failed me again
Not what I was looking for

[marquita]

my number is -l-2l BUT I DON'T KNOW