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

Learn about the square root symbol (the principal root) and what it means to find a square root. Also learn how to solve simple square root equations.

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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[wydpanda]

Just started using square roots in math. This was a great explanation. Thank you so much!

[bonelessbooks]

This guy should voice scar in the new lion king live action

[dinydinasauer]

Way way WAY better than my math teacher said it; Sloppy and confusing. We should just watch your videos the whole class. lol

[namratacharles]

Khan Academy...providing excellent learning at no price... mark of GREATNESS

[rajuthomas]

Thank you very much for providing us such videos for free.The whole Khan Academy professionals are the owners of great hearts

[mistakenmeme]

I'm 12 and this makes more sense then simple division.

[can_with_beans]

9 = 9




Every sixty seconds in Africa a minute passes

[ylkabicasan]

Title: *8th grade*
Me, a sophomore dweeb: :')

[infernotara]

its so cool that he's like a professor and is so amazing at math but still makes videos about something as simple as 8th grade share roots.

[hankhill]

Bruh I am positive that every kid born between 2003-2010 has heard this mans voice at least once in their life

[mwjpfrp]

I have a test tomorrow and now I am revising last minute, this helped me understand square roots really well. I’m pretty confident for my test tomorrow

[kazuya]

Thank you so much! This is 2021, and it continues to help me with preparing for an upcoming Math Exam >:D
Thank you so much Sal Khan! We love Khan Academy and you! <3

[WanderingFireOG]

8th Grade Math - I didn't care about math at all until I hit university. Now here I am taking a statistical analysis course, having to go back to good old Grade 8.

Stay in

[aneeskhan]

I just love your teaching it much more better than my teacher

[sweetmarmaladera]

I'm a freshman at college and don't know how to square root and my math test is in 3 hours. Please learn how to square root before you get to college lol. I'm sure this video is going to help me a lot. Thank you!

[naiakenj]

Hey guys! I'm studying at a Kazakh school, but trying learn it in English too, to improve my English skills. Idk why i said here, but ok 😌 Thanks for video, it was useful.

[saudinho]

your way of teaching is so neat, thx for giving me insights about how to teach it

[moreydumo]

Number
Number squared
Number cubed
Number idk how to make it

[Jimothy-]

i love it when teachers explain things by saing "it is cause it is."

[rahmamohammed]

Is it me i hear so many people talking about Khan academy and today I just learnt that it's really helpful well done KHAN YOU earned a sub :D