How do we find the Cube Root of a Large Perfect Cube? | Don't Memorise

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📢Supreme Court Live Today on NEET Paper Leak 2024: ru-vid.comD4rsJ3LZlIM 🎯NEET 2024 Paper Solutions with NEET Answer Key: • NEET Answer Key 2024 |...
📅🆓NEET Rank & College Predictor 2024: infinitylearn.com/neet-rank-p... This video explains how the cube roots of large perfect cubes can be found within a few seconds!
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In this video, we will learn:
0:00 Introduction
0:33 Cube Root 4 Digit Number
0:54 Cubes of Numbers from 1 to 10
4:29 Cube Root of 6 Digit Number
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#Cubes #CubeRoots #Exponents #neet2024 #infinityLearnNEET #neetsyllabus #neet2025

Опубликовано:

25 июл 2024

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Комментарии : 1,6 тыс.

@prawnydagrate 2 года назад

I remember seeing a little simpler version of this method in a math book a while ago. Basically instead of memorizing the cubes of numbers from 1-10 (although doing so would help), you just have to remember the number 2837. This is because 2 corresponds to 8 and vice versa and 3 corresponds to 7 and vice versa. If you look back at the cubes table you'll notice that for every number other than 2, 3, 7, and 8, the units' digit of the cube is the same as the units' digit of the number. So to find the units' digit of the cube, you just have to check whether the number is 2, 3, 7, or 8. If it is, then write the corresponding number (if it's 2 then write 8 and if it's 3 write 7 and vice versa) and if it isn't then write the same number. Hope this helps!

@AdityaSharma-rg2wt 2 года назад

Please tell the name of the book please.

@anonymousone3024 2 года назад

Yup

@ritikagupta626 2 года назад

this really helped :))

@wobblyorbee279 2 года назад

really really helped thx

@wobblyorbee279 2 года назад

yeah what is the name of the book?

@Nenmeu2 7 лет назад

Why they don't teach us this in school????

@johnallegood4469 7 лет назад

Nenmeu 16 bc it's a shortcut

@historyaddict2753 7 лет назад

But the cubes of 1-10 that you should know by heart make up the 3 digit cube roots.

@KotakDhruti 7 лет назад

good method but how to recheck fast without use calculator.

@patuchothe6388 7 лет назад

Nenmeu 16 yes bhai

@keamorshedsoccer1382 7 лет назад

Nenmeu 2 I know right

@InfinityLearn_NEET 4 года назад

Wish you could calculate Cubes & Cube Roots of large numbers in seconds? Then enroll in our full course now - infinitylearn.com/cbse-fullcourse?RU-vidDME&H0l1u_xQ5o&Comment To watch more videos on middle school Algebra click here - bit.ly/MiddleSchoolAlgebra_DMYT

@rajyalakshmi9650 4 года назад

Could you say what is the secret of your animation in this video

@priyalpanchal8620 4 года назад

Such a nice teaching method

@CreativeTechTubeOfficial 3 года назад

I've been just able to solve any number's cube or square root in 2 secs!

@nikhiljamwal6468 3 года назад

If 12167 is the cube root of 23 then the cube root of 11167,13167,14167,15167.........26167 is also 23🤔🤨😐

@dctc-_-3934 2 года назад

Thank you

@nafsikul 5 лет назад

I am a student of B.sc (Hons) course ,I didn't know this easy method before watching your video !! Thanks for sharing this helpful video .

@prajit_me 2 года назад

Wt is Hons

@nafsikul 2 года назад

@@prajit_me Honours

@ashwanikumar-gv6ir 3 года назад

I overestimated cube roots. It's far easier than what we thought.

@bloodylogan8262 2 года назад

OI OI OI LUENI ADAE KANKE

@secretunknown2782 2 года назад

Nah you underestimated it after watching this video 😂 This trick only works upto numbers smaller then 970299

@ashwanikumar-gv6ir 2 года назад

@@secretunknown2782 yeah but I overestimated small cube roots.

@superhero25e 2 года назад

True

@saisuhasreddy 2 года назад

Same😢

@vanubhatia2010 4 года назад

Actually...the estimating methods for cubes is somewhat like this.......😅😅

@diwakarmishra5440 3 года назад

Me also indian and also AGREED

@Santosh-lx9gh 3 года назад

Yeah really

@Santosh-lx9gh 3 года назад

Not somewhat

@aishwaryakonduri7933 3 года назад

Yeah

@girlsvsboyslegend3636 2 года назад

I agree with you bro 😊

@stevenscottoddballz 6 лет назад

Thank you SO much!!! This will come in VERY handy when I am playing Cross Figure, and the clue is something like "Cube Root of 6 Across". I now have a way to work BOTH ways to get the answer! Thanks again!

@awethagos2172 4 года назад

One of the greatest Mathematics secrets. I thank you so much.

@secretunknown2782 2 года назад

Literally it is taught in india in 8th class bruh

@anonymousone3024 2 года назад

Well not in my school I'm frm kv

@ronalddump4061 Год назад

What is so great about it? It cannot be used to find, or help find, the CR of any random number you might encounter in your day to day calculations. (You will with overwhelming likelyhood NEVER encounter a perfect cube in your calculations, and even if you did, you will never know it is a perfect cube anyway) As a practical matter it is entirely useless

@sonakshigoswami5622 6 лет назад

I wish I had known this earlier! This is amazing! Thank you!

@poissonyoung6019 6 лет назад

このように説明されれば「確かに！」と納得できます😆 またひとつ役立つ情報を得ることができた😊

@nittegurjar2160 7 лет назад

your english is excellent

@yashkeysandvoice5872 4 года назад

[6B8]梁家誠 LEUNG KA SHING agreement made

@Technicalzakki1 3 года назад

💪😉

@Inaflap 5 лет назад

"First we need to know the cubes of numbers from 1 to 10 by heart.." and this channel is called 'Don't Memorise'.

@salumtummundi9462 5 лет назад

Know not memorise

@arz3nal104 4 года назад

literally anyone can easily calculate cubes upto 10 in seconds

@hambonefakenamington69 4 года назад

@@salumtummundi9462 that's just memorising with extra steps.

@hambonefakenamington69 4 года назад

@@arz3nal104 that would take time and the purpose of quick calculation would collapse. Memorising them is easy tho I guess since they come up a lot while solving.

@crafter3890 4 года назад

Ladies and Gentlemen, we got 'em

@englishmania3271 6 лет назад

Seriously its awsm it saves my time a lot..😍❤

@umasurampudi5003 3 года назад

Caution: this works only when you are asked to calculate cube roots of perfect cubes. Don't brag anywhere and fail if someone asks you cube root of 2198 and you say 12 (using this method)

@fear_less_2020 3 года назад

at least it will give us an estimate.

@adrian7468 3 года назад

Omg I was look for this answer all this time. Seems everyone was just mesmerized by this smooth was of doing perfect cubes. Based on this method the cube root of 2197 and 2677 are the same "13". Lol

@salma-zk8ql 2 года назад

thats why the video title says “of a large perfect cube”

@secretunknown2782 2 года назад

Caution 2 : this strategy only works upto 99 cube if you use this method to calculate cubes of higher numbers than that your answer will be wrong 😑

@secretunknown2782 2 года назад

@@salma-zk8ql nah bro only works for two digit numbers means this only works upto 99^3 after that you can’t use this method and get the right answer For ex. Cube of 103 =1092727 Now use this method The answer you will get by using this method will be 143 Which is wrong 😑

@little_bunny882 2 года назад

Thanks Ma'am. Tomorrow is my Final Exam of Mathematics and your method will really help me to solve the problems related to cubes and cube roots. I have also watched your video where you were teaching about how to find the square root. Thanks again.

@sachindhumal8977 2 года назад

Oooopsie

@hardocore 8 месяцев назад

21952

@franm47 7 лет назад

Great video! Very well explained

@captainanu102 3 года назад

Wow I was astonished when I did this so quickly and correct...😱 Love you don't memorize!!! Great job

@InfinityLearn_NEET 3 года назад

Thank you so much Anukriti for your kind words. We are glad that you understood the concept. You motivates us. We love our Pi Army and would like to stay connected.🤗🤗

@captainanu102 3 года назад

@@InfinityLearn_NEET Thankyou

@ichiwo1526 7 лет назад

lol Channel's name is "Don't Memorise", puts up a video how to do cube roots in a few seconds. One of the requirements is to memorise the cubes from 1 to 10. That being said, nice video.

@moorthiadithyan8559 7 лет назад

useful trick....

@ruwandigeekiyanage1567 5 лет назад

+moorthi adithyan 😅😅

@madhvi0769 5 лет назад

Pagal hai kya

@madhvi0769 5 лет назад

Are you mad

@adnanmohammed1727 4 года назад

😂

@joelmoore7081 5 лет назад

NICE! I can't believe I didn't know this before, it actually works.

@hydravedansh2729 3 года назад

THANK YOU FOR LETTING US KNOW THIS TRICK. IT IS REALLY HELPFUL. THANKS AGAIN

@InfinityLearn_NEET 3 года назад

Most welcome, Hydra Vedansh! We are glad our video could help you. Keep watching and learning!! 🙂🙂

@vaishnavibalaji24 3 года назад

The trick was very simple and you won't beleive if I tell you something! I am able to calculate it within 5 secs🥳 Thanks a lot to Don't Memorise channel and members❤️

@InfinityLearn_NEET 3 года назад

You're most welcome Vaishnavi. We are glad that you understood the concept. For more videos, please visit our website - dontmemorise.com/

@37rainman 11 месяцев назад

But there is no utility in being able to find the CR of a perfect cube. (Except for being a party trick, and that will wear thin VERY rapidly)

@vaishnavibalaji24 6 месяцев назад

Well yeah but it's for the spontaneity. You know, sometimes it can be used in school exams and even in olympiad exams as well. And I saw this comments just now, after 4 months😅@@37rainman

@fatimafazal7675 5 лет назад

Oh my goodness Thank you so much! You're a lifesaver! So helpful and so easy!!

@InfinityLearn_NEET 5 лет назад

Thank you very much for your appreciation and for watching Fatima. :)

@fatimafazal7675 5 лет назад

Don't Memorise Not at all! :)

@ronalddump4061 5 лет назад

How did this material "save your life", or for that matter help in any way?

@fishtick_3567 3 года назад

@@ronalddump4061 she/he probably had an exam

@secretunknown2782 2 года назад

@@fishtick_3567 so she was gonna suicide if she failed at exam wut an idiot

@ashutoshtiwari6469 6 лет назад

Explanation given by you is very Simple and intresting thanks for uploading this video

@moviecraft7601 6 лет назад

This is the best channel I ever come through in my life....... Your superb a big like from me 👍👍👍👍

@richashrivastava4168 3 года назад

Well, that's great, but could you please tell that how do we solve cube roots for numbers that are imperfect cubes?

@brc93 4 года назад

Thank u so much. It really helps me a lot

@muhammadidrees4661 5 лет назад

Very interesting solution.I like your teaching techniques.I am also math teacher and follow your style.

@gs336 5 лет назад

Amazing. It took me 3 seconds to solve the problem. You are just amazing

@anooptripathi3267 3 года назад

Heyy.... Same here bro

@JazalFerran._.07 3 года назад

this method is amazing i tried it right after your first explanation and couldnt believe my eyes...IT WORKED!! Thanks Dont Memorise

@granthkothari3401 3 года назад

Just amazingly solved Why isn't all this taught in school ???

@archimedesmaid3602 5 месяцев назад

Because it will not be useful for anything you will do with maths in your life. Think about it! You are doing a calculation and in it, you find you need to find the CR of 2659.8. You need to find the answer to 4 digit accuracy. Will this trick help in any way? The answer is no -- it wont help in any way to find the answer

@PrakritiSharma3 Год назад

I remember having a mental breakdown when I scored miserably in the UT. Wish I knew this method back then!! Thankyou for this video

@elitedroneman1234 4 месяца назад

THIS IS GENUINELY GENIUS, SAVE THIS CHANNEL AT ALL COST 🗣🔥🔥

@8lpha 2 года назад

Ahh finally i got the vdo of my undertanding level 🤣 ihave been really dead facing problem for this.Thanku for this vdo🥰🥰. It made me cry🤧🤧🤧

@theskilds 5 лет назад

If they taught us this in school, half of 8th grade would fly by!

@gs336 5 лет назад

But not 9th

@SujalRajput10 5 лет назад

Uhh, even if a number is not perfect cube this method will tell us it is Just try adding 1 to any perfect cube they gave eg for and apply their method. So don't use it unless you are damn sure it's a perfect cube

@sayonmondal3454 5 лет назад

Yes in our school it is taught in 8th

@bhoomivasa9128 6 лет назад

Wow...this was really a good trick to save time😊

@tejunayaktejunayak9932 4 года назад

Thank you , it's very helpful. 😊

@gowthamkrishnans8869 4 года назад

Although I had learned this in school, I had forgotten it in no time.

@abdulkalamabr5553 6 лет назад

💓 thanking you , sir

@abc_cba 6 лет назад

Woah ! I didn't know this till my master's !

@shayantanibera 4 года назад

Wonderful mam😍thank u sooooo much this helped me a lot

@cipherunity 6 лет назад

The trick is only applicable for a number which is a perfect cube and not for every number. For example according to the trick, cube root of 274624 should be 64 which is not correct. 64^3 = 262144

@Mohitkumar-qu1sk 7 лет назад

this is useful for me

@InfinityLearn_NEET 7 лет назад

Yay!

@ryan2-518 7 лет назад

Don't Memorise what if the answer is irrational

@ryan2-518 7 лет назад

tampicokid it can help on a bonus on a test but u can't use a calculator lol

@raghunathganguly3367 6 лет назад

#SMRT4JOBS

@vmguptajr 4 года назад

Thanks...this concept was explained very well

@studytimewithcommercebabaj6427 5 лет назад

Your teaching style is so good

@nipunk5878 7 лет назад

damn awesome trick😆😆😆

@mathewakash5692 5 месяцев назад

What if it's not a perfect cube number ??

@amanpnchl8937 5 лет назад

Your video is very brilliant and....you're like the best teacher for us.. Thank u so much😊❤

@chandajha9413 2 года назад

Well described and very helpful thanks

@mdsuruzzaman2014 5 лет назад

Please explain how to solve the cube root of 9 digit numbers ?

@justhenry7083 7 лет назад

this method can be used only on perfect cubes if u add one number in 2197 i.e. it become 2198 even the it shows that it is a cube of 12 bt notice that the cube of 13 will never be less than 12 and actual cube of 12 is 1728... So my advise is dont use it in exams (-_^)

@samarthsingh5612 5 лет назад

I think you're right This method doesn't apply everywhere, only in perfect cube. So I'll also do this SUGGEST. Because we will apply for quick access to exams but what does it mean when it gets wrong?

@ironrod9212 5 лет назад

Right

@anwarimulla8709 5 лет назад

I agree..

@sergiu2325 5 лет назад

I have a video explaining how to do that?It is not the best thing I did but it is my first uploaded video ever.

@mohamedkasim9626 5 лет назад

Yes

@zeabruh 3 года назад

Can you also make a video on finding cube roots by long division method?

@sujiteng 5 лет назад

Excellent video. I am very pleased with the teaching . It really helped me to improve my skills. I want don’t memorise to publish more video

@InfinityLearn_NEET 5 лет назад

Thank you for your kind words! We really appreciate your compliment :)

@ronalddump4061 5 лет назад

Ma'am, if teaching people such things on utube gets people interested in math, there is value in it. I give you that. But beyond a party trick, there is no use in a method to find the cube root of a number which you got by cubing an integer 1 minute previously. This method has no value in the real world of calculating. FI, lets say the number I need to find the root of is 5792.66. Can this trick help in any way on my path to finding the root of that number to, say, 5 digit accuracy? No, it cannot, not one iota. Why not simply teach the method to find the cube root of ANY number?

@Topexams 6 лет назад

supper

@mohammedsulthan1643 7 лет назад

How to find a cube root of a decimal number

@ryan2-518 7 лет назад

//ANNONYMUS// or if the answer is irrational

@gamingfever2.088 4 года назад

Yes thats what i needed So i came here....... BUT THEY DIDN'T COVERED THAT TOPIC

@memetv3345 5 лет назад

Dont Memorise,thank you so much for your nice explaination and for the way you teach . Please can you kindly make a video on euclids geometry?Thank you so much.God bless you.

@sejaldhoke4502 4 года назад

Thank you Mam so much that because of you I am able to understand that how to find out cube root........👌👌👌👌🙏😇

@manimanikandan362 7 лет назад

for 1675??I didn't get the right answer??is there any condition some numbers??

@InfinityLearn_NEET 7 лет назад

Yes Mani. go through the description of the video. It works only for perfect cubes :)

@cipherunity 6 лет назад

The trick is only applicable for a perfect cube. In your case the number 1675??1 is not a perfect cube. for all values of ??

@jameshumphreys9715 5 лет назад

@@InfinityLearn_NEET you never said perfect cube roots in the video

@shaikghouse4501 5 лет назад

Is it perfect cube

@souramitadebnath2732 5 лет назад

Den how we will understand that it is a perfect cube or wht???????😐

@immanuel6139 4 года назад

This is a good shortcut method this is amazing!

@InfinityLearn_NEET 4 года назад

Thank you, Sam. Happy to know that you liked our video. 🙂 To watch more such amazing videos, get in touch with us at: bit.ly/DontMemorise_Register

@dakshikamohaniya3732 6 лет назад

Amazing... Thank you so much

@InfinityLearn_NEET 6 лет назад

Thank you very much for the appreciation and for watching Dakshika. :)

@aayushjain4388 5 лет назад

Don't know whether this is vedic maths or what but it's just awesome and i loved it!!

@indumathimohan6299 7 лет назад

I'm a commerce student it is easy to understand Maths

@InfinityLearn_NEET 7 лет назад

Awesome :)

@lataadhikari7436 4 года назад

No one really cares

@halfbloodprince6141 3 года назад

Fastest video i have ever clicked😂

@sariksarik2031 Год назад

This is really helpful for me... Liked this video by heart. Thankyou so much.

@khalidasad9967 8 месяцев назад

This is really amazing, it saves me the time to calculate AND is easy to grasp, becuase of this trick I can attend my Math Test tommorow, Thank You! :))

@barkha7119 6 лет назад

I love this trick just bcoz of u I will top in maths thnku very much

@dominiqueyokosawa7217 6 лет назад

I didn't fail math because of this video! :D

@ismartshankar2120 4 года назад

Thank's Don't memorize I understand this method and solved any cube root

@sabiannenggalasunito6944 2 года назад

thank you for the short cut, it helps me alot :D

@searcher565 2 года назад

Is this work for 33603 ?

@FlipFlopSaber 7 лет назад

I tried it on 5149 but the ans is wrong plz sole cube root of 5149

@winonalim5659 7 лет назад

Glen Dsuza the amswer is 59,i have a trick on that

@ubgrad68 7 лет назад

Trick works for whole numbers, not ones with numbers to the right of the decimal point.

@sukhpreetkaur1277 7 лет назад

Winona Lim plzz give the trick for that

@duratyy 7 лет назад

is 19 the answer?

@void9720 7 лет назад

19^3=6859. 17.2679572 is an approximation, but most mathematicians would refer to it as the cube root of 5149.

@NimishGupta2094 7 лет назад

how to find cube root of a large non perfect cube

@BOBO-wq9mx 6 лет назад

ravi badiger 😹😹😹

@Adnan_Khan__111 6 лет назад

ravi badiger so u can take it in examination hall.?

@hunterp913 6 лет назад

Mohammad Adnan Khan No test will ever require you to find the cube root of a large non perfect cube without a calculator. And most tests will give you a calculator.

@jameshumphreys9715 5 лет назад

By using the Babylonian method, a non scientific calculator, and paper and pen, to check an answer use Google or a scientific calculator.

@raghubharathi1999 4 года назад

super method and thank you for keeping this in you tube

@37rainman 4 года назад

Why is it a "super method"? You will never in your whole lifetime use it for anything.

@abasednerd9412 3 года назад

I am 13years old and in the 2nd practice sum I got the answer (without watching the answer first in the video) as '48' a slight mistake to not get '58'. Your teaching process is very good.

@kushagrasinghchauhan1870 7 лет назад

verygood

@InfinityLearn_NEET 7 лет назад

Thank you :)

@aravula 7 лет назад

Kushagrasingh Chauhan क,च

@TauGeneration 7 лет назад

Kushagrasingh Chauhan kissass

@Ajaykumar-oe4mr 7 лет назад

V v v v v good

@aashish3479 4 года назад

This video is very nice. If all students see this video this video is very helpful for them.

@InfinityLearn_NEET 4 года назад

Thank you for your appreciation. You can be quick in maths by watching our videos on Warp Math : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-lt1FY6jlgmY.html

@bitlifegirl2104 4 года назад

Thank you so much, this helped alot

@shubhampanwar6689 7 лет назад

Sir/ Madam by your method the cube root of 166666 is coming wrong.

@InfinityLearn_NEET 7 лет назад

Hi Shubham, this method works only for cube roots of perfect cubes :)

@catherinele6372 7 лет назад

you wrote the devil's number ( triple six )

@37rainman 6 лет назад

+Don't M: Your efforts should lie in teaching people to find the cube root of ANY number to any accuracy desired. (In our lives, the talent to find the cube root of a perfect cube will obviously be perfectly useless, except as a parlor trick). Now make a vid on how to find cube roots quickly and accurately. Obviously it might be a chore because children are not even being taught to add subtract and multiply properly, and likely you yourself are a product of that pathetic environment

@hunterp913 6 лет назад

37rainman One why are you telling her what to do, two use a calculator, three what do you mean children arent taught to add, subtract, and divide properly you sound like a dad who complains that his kid was taught a different method then him

@sweetysam742 7 лет назад

please solve this - cube root of 4094?

@yosefmarcera 7 лет назад

15.9973954

@shailyshah7998 6 лет назад

@anjaneyulun858 6 лет назад

u r ans is 14 = unit digit is 4 no 4 remaining three numbers leavit single number is 4 so we have check 1 cube and 2 cube lower number in given place so lower number is 1 so ans is 14

@cipherunity 6 лет назад

The trick is only applicable for a perfect cube. In your case the number 4094 is not a perfect cube.

@ASLearningPoint 3 года назад

waow .. your tricks are very impressive sir .. I'm also a maths teacher that's why I was searching about some ways ,then I got your this video and I'm very impressed to see these trick and the way you teach .. really appreciated

@InfinityLearn_NEET 3 года назад

Thank you so much for your appreciation. We are glad that you understood the concept. We are happy that we could help you learn. You motivate us to do better. We love our Pi Army and would like to stay connected. 🤗🤗

@ASLearningPoint 3 года назад

@@InfinityLearn_NEET thanks a lot for your kind reply ,from this channel I learnt so much new things, concepts in a very easy fun manner , superb :)

@futurehousemusic7080 3 года назад

Wow I don't have words to explain my God what exceptional and fantastic vedio

@roshnirawat1134 3 года назад

The English teacher was intelligence

@JDI007x 5 лет назад

Don't memorise: you have to memorize cube of 1 to 10.

@artijha5276 3 года назад

Seriously I loved it and now I can solve it easily Thanks ❤❤❤❤ a lot

@mei5146 3 года назад

It's very easy to study it's really helpful for my studies thanks a lots for upload this video sister.

@InfinityLearn_NEET 3 года назад

You're most welcome Lakshmi. We are really happy to hear that it was helpful to you. We are glad that you understood the concept. You motivate us to do better. Keep watching our videos : )

@quitted22 7 лет назад

I using this in exam

@InfinityLearn_NEET 7 лет назад

All the best :) #DontMemorise

@mjjaanu5202 6 лет назад

Ramon Lockhart I am using this too.

@Adnan_Khan__111 6 лет назад

Concentrate on your english

@skqrt122 7 лет назад

Thought it was 83

@wildgamerz3821 2 года назад

After seeing first problem I did the second problem without seeing it is so easy to find cube root now and u saved me tomorrow was my exam Thank u very much 🥰