Introduction to cube roots | Numbers and operations | 8th grade | Khan Academy

Learn the meaning of cube roots and how to find them. Also learn how to find the cube root of a negative number.

Missed the previous lesson?

8th grade on Khan Academy: 8th grade is all about tackling the meat of algebra and getting exposure to some of the foundational concepts in geometry. If you get this stuff (and you should because you're incredibly persistent), the rest of your life will be easy. Okay, maybe not your whole life, but at least your mathematical life. Seriously, if you really get the equations and functions stuff we cover here, most of high school will feel intuitive, even relaxing. (Content was selected for this grade level based on a typical curriculum in the United States.)

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[giovanimosqueda]

Everyone is from 2 years ago I am just stuck in 2020 doing online classes

[cem]

I was sick for 3 days and I missed square roots and cube roots. So I went up to my teacher to ask for the notes and she just told me to sit down 🙃 so thank you for explaining

[thetacosaurusrex]

this hurts me physically but i have to watch bc life

[samh]

Wow all the 8th graders that commented 2 years ago are now juniors in high school MINDBLOWING

[thesagesse.]

You explained me better than my teacher thanks 💞

[k.k--]

Who else is here because of online/Google classes?

[xxkaxyxx]

You explained this to me so much better than my teacher, thank you.

[mkauumi]

not me being in 10th grade and still not knowing 8th grade material

[goochie]

Thank you so much! I was having trouble calculating the cube roots because I had no idea how to find the number so I was just guessing and hoping. now I can succeed in my Algebra class

[speedycyclone]

Thank you so much! The school system only made you guess the factors but I really liked it when you explained a factor tree at the end! Superb (12yo)

[LindaengelustrupBlogspot]

I've been sitting soooo many hours looking for a simple way to divide it until the end of this video :-)))

[eviey]

Pov: your math teacher dosent explain anything and expects you to know things before she teaches them, so your here.
Sorry I didnt get a college degree before I came into 8th grade.. should've thought about that sooner.🤪

[aliciacheese]

thank you for explaining to us people who need help
🤩😁😄

[peadarmacnevin]

thanks was laggin on online math class and this is the video that helped me out.

[simplehs]

missed the beginning of the second semester, my teacher’s making me do all the previous work so here I am ✌️

[Valentina-unyh]

This is so helpful my math book was giving me all types of stuff.But I got it now.You made it so easy.2018

[firstdownfootball]

Thank you Mr. Khan. You are saving me with your epic math skills.

[mohamedkotb]

Bro how your hand writing is that awesome do u use a drawing tablet or smth ?

[zakrizakri]

I don’t know if I’m stupid but it just doest seem like I can get a clear answer on how to cube root something

[grantlackey]

I have a test tomorrow and this really helped me