# 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.

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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.)

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.

## 33 thoughts

1. COMPLEX says:

Like the way about how you teach

2. Lara McKie says:

What I’m confused it says 8th maths and I’m in year6 and I’m learning this at school

3. nithya kannan says:

Awesome 👏
Really helped me out

4. Rezwana Sultana says:

Dear Khan Academy, can you also solve the power to the number and base number ASAP. Plz. Thank you so much big help.

5. SANS Brother Papyrus says:

Soooo understandable 👏🏻👏🏻👏🏻👍🏻👍🏻👍🏻

6. Skelet101 // Hanna says:

um can u do square root of a non perfect square? if u did it pls reply to me ty

7. MLPEG MLP! says:

i gueess i agree :I

8. Rihaab Fareed says:

(-3)2 = +9 because if we do it like this: -3x-3= +9 here, integers are being used and as minus + minus = plus , so the ans will that’s why be positive, right?

9. nicole Sock says:

why do I have to watch this when I already know this shit?….

10. Raju Thomas says:

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

11. Fun dolls And more says:

I am I 6th grader and I’m doing 7th grade in the summer so I can be in 8th grade next year so I am practicing my 7th grade math so I will know what they’re telling me and you really made it easier who knew square roots where so easy

12. play game says:

dog 5e

13. Domenic Cortez says:

Doing this for study group

14. HYPERV3NOM says:

My teacher told me to watch this video, and I’m just only in 5th grade

15. Gabriel Engram says:

Maybe you should have defined Square.

16. Victoria Sanchez says:

DO imperfect square

17. Fox-E says:

good thing we got that squared away.

18. Banana Legend GamingXL says:

umm i learned square roots in 4th grade

19. Never eat tomatoes. Im serious never eat then. says:

I have a question. So, the number has to be pacific to work in the square root? By that I mean, so you can only have numbers that have equal multiples, and not just random numbers?

20. Z Fuser says:

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

21. Uma Thakur says:

thank

22. Kilos says:

who else is in mrs rozycki’s class -_-

what is the use of the sign here?

24. Hossam Elzomor says:

I always knew Hindus were smart. Bruh ur way better than my useless teacher

25. NIKHILESH RAJKUMAR says:

8th standard

26. Daylight Wolf says:

I’m in 4th grade but I already know this stuff no lie

27. Margaret Meow says:

now i understand even though im 5th grade

28. skylah banks says:

OMG IILYSM YOU HELPED ME SO MUCH LIKED AND SUbBEd

29. Prince Yousef says:

Under root nh hai?

30. Taylor MG says:

Wait what? This is 8th grade!?? Omg, ugh. I’m in excelled math which is more than regular and advanced and my MATH TEACHER IS TEACHING ME THIS IM ONLY,IN 6th GRADE :///

31. VASUKI NARALANKA says:

very good website

32. Fabian Alejo says:

tysm helps me taking my notes 😀

33. Chloe Brown says:

I can see clearly now the rain has gone. In other words the confusion