This is exactly what I was looking for. I'm not in 8th grade, but I am preparing for a masters degree. (I wish I would have known in high school that I would need this later) :D
@LetsDoMath2 жыл бұрын
Glad to help. Please also take a look at the second vid on this, with repeating primes. I think that one will seal the deal for you.
@lalthawhpuii18643 ай бұрын
Same
@farhathammad-ms7gk3 ай бұрын
Same here bro I am giving my entrance test and I don't even know the basics😭
@MookaMG2 ай бұрын
I'm guessing GRE?
@Val0riex_Ай бұрын
@@LetsDoMath 1:31 why are we dividing by 5 here and not 3?
@spoonofsugar1431 Жыл бұрын
grade 10 and struggling with arithmetic geometric sequences because of lots of GCD and shenanigans. THANK YOU SO MUCH this helped clear what I was missing!!!!
@LetsDoMath Жыл бұрын
Glad to help. 😃🤗
@angelica_schyler2233 жыл бұрын
Hello, I'm an 8th grader whom just spent about 2 and a half hours fatorizing the number 225.then I finally got tired and looked on KZbin to see if anything could help me. And this video did just that. Thank u so much u helped me a lot. God bless you ❤️🎉💕
@LetsDoMath3 жыл бұрын
That’s fabulous! I’m so pleased. My second vid on this has an example which has repeating primes. I think that might actually be a bit better - I was getting stronger with the method and the thinking. Doesn’t ‘guess and check’ just suck the life out of you? I loathe that approach and I love this one for its speed and clarity. 😃🤗🤩💕
@angelica_schyler2233 жыл бұрын
@@LetsDoMath yah, I rly don't like the guess and check method. It takes too long. (and it is very irritating if I must say) but this is an organized method and I rly enjoy doing it. Thax again so much.
@LetsDoMath3 жыл бұрын
It’s truly such a delight to know that you get it and it has let you blast through that work! Just fabulous!!
@shobha47173 ай бұрын
Narayan Bless You 🎉🎉🎉🎉🎉😊😊😊😊😊
@jemmasoper73458 күн бұрын
Hi, can you explain why this works? 😊
@zainkhanar51325 жыл бұрын
I'm in grade 10 and I was struggling with factorizing big numbers, this helped so damn much. Thank you so much!
@LetsDoMath5 жыл бұрын
It is my very great pleasure! Thanks so much for your note. 🤗😃💕😎
@abdullah_ahsan24164 жыл бұрын
Zed-Kay sem here
@jagdishchander16143 жыл бұрын
Mee too
@jagdishchander16143 жыл бұрын
I already known by this method in factorisation
@clxudyrxbyisme2 жыл бұрын
Daymn u now grade 12 good luck!!
@Janellasajona10 ай бұрын
Omg!!! I'm JUST Grade 5 and I'm already learning this for our test!?! Thank God I saw this!!! THANK YOU SO MUCH MAY GOD BLESS YOU FOREVER!!! ❤❤❤
@swethajagadeesh281117 күн бұрын
Nd I'm grade 6 learning this
@mitt14593 жыл бұрын
hi!! advanced grade 6 level student here, this is literally the BEST method i know. Thank you so much!! gotta do homework now i am 2 days behind schedule and my class is tomorrow!!
@LetsDoMath3 жыл бұрын
Cool! I was delighted when I first thought of it and tried it out! That whole thing of taking anew line each time was just my way of keeping straight what I’d actually done first time.I was kind of surprised when it suddenly all came together! I’m glad you like it too, and thanks for your note. 🤗😃😎💕
@shannonhill63655 жыл бұрын
Thank you! I posted this on my google classroom for students who missed class today.
@LetsDoMath5 жыл бұрын
Hi Shannon, that’s great! Thanks for sharing. 😃😎🤗
@blebby70342 жыл бұрын
Thats a students worst fear, you devil.
@mariamawad80422 жыл бұрын
@@blebby7034 LMAO 🤣 😂 😆
@blebby70342 жыл бұрын
@@mariamawad8042 :D
@Aya-px3yd2 жыл бұрын
@@blebby7034 LOL
@paulnagel933 жыл бұрын
The prime factorization video combined with this one were very helpful to quick, systematic factorization.
@LetsDoMath3 жыл бұрын
Great stuff. The second one, with repeated prime factors is a bit stronger I think. Probably because I’d done a lot more practice with this strategy and was much more comfortable with it. In this first video, I’d only just come up with the method. Pretty exciting stuff though, to be able to suddenly get all those pesky factors, where previously, no matter how hard I tried, I’d miss at least a couple of factors. Now, that’s a thing of the past.
@gautammeena94584 жыл бұрын
Very nice trick I was confusing to get simplest form Nice trick it is so brilliant
@LetsDoMath4 жыл бұрын
Glad you like it.,I was really happy when I worked it out. These kind of questions have always left me missing a couple of factors out. Not any more! 😉😎💕
@shrineswonderhopes116811 ай бұрын
Wow, what a nice way to teach, how to knowing all the factors of any number. Thankyou so much. 🙏 ❤
@shwetasingh7977 Жыл бұрын
I'm in grade 5 ICSE board and I got numbers in thousands to find factor of . Just the video I was looking for THANK YOU SOOOOOOOO MUCH❤❤
@jyotijain14339 ай бұрын
I ma in grade 5 and I was struggling on this kind of question.I am preparing for IMO SOF. IMO is impossible to do. This video helped me a lot. BEST VIDEO EVER
@jyotijain14339 ай бұрын
I meant I am in
@LordDrone-rg4uf5 ай бұрын
What do you do when the prime factorization shows multiple of the same prime.
@LetsDoMath5 ай бұрын
Glad you asked that. There’s a second video showing exactly this scenario. 😃 Have you been on my website? It’s so easy to spot it there. Go to the Resources page (click that link on the signpost), scroll down to the section on prime factorization, and you’ll see it at the end of the list there. 🤗
@gracehui22124 жыл бұрын
I understand until the combination part : that's when it got confusing
@LetsDoMath4 жыл бұрын
Sorry Grace. It IS a bit fiddly, but if you can stick with it, it does work. If you're doing smaller numbers, you can just go with one of the other methods in the playlist Factors, Prime Factors.
@blessed_bbynm2 ай бұрын
Same
@LetsDoMath2 ай бұрын
Maybe take a look at the second vid where there are repeating primes. That might help you to see a second example. It IS quite a headache to get your head around. Tbh most of the examples you’ll get I would expect to be 2-digit numbers, and values for which you can immediately find 2 factor pairs. Like 54 is from 6x9. Find the primes of 6 (2 and 3) and the primes of 9 (3x3). Now it’s easy enough to get all your combos I think.
@riri_luvu2 жыл бұрын
Thank you so so much for this, it helped me a lot! And Instead of being on my phone or any type of device all the time, i think i shouldve just studied. You made math even more easy for me, thank you so much!
@LetsDoMath2 жыл бұрын
They make phones enticing and engaging, probably too much so. It takes some willpower to put it face down, turn it off and do something more productive instead. Good for you, coming back to the math with solid purpose! If you put in regular practice at solving problems, you'll really see the benefit quickly - in terms of how quickly you think through a problem, and the success you have at solving those problems. Practice really is the key. And it's a pleasure to help, of course! 🤗😉😃
@theallrounder5732 жыл бұрын
the viewers who see your channel become great persons
@LetsDoMath2 жыл бұрын
Sweet!
@christineowens44493 жыл бұрын
That is a great way! It helped me so much with my maths!🙂
@LetsDoMath3 жыл бұрын
I'm so glad! Thanks for letting me know. 😃🤗🤩😎
@diana.28023 жыл бұрын
Im in 5th grade and I'm already doing these. Thanks man
@LetsDoMath3 жыл бұрын
WOWZER! I would have run a mile if they'd given me this at your age! GAME ON little dude! Go for it!! I'm hoping for BIG things from you. 😃😎😉🤩💕
@Sanctifier_333 ай бұрын
Isn't is crazy that some people charge to teach this But.. the students are saved by these kind of generous u tubers making vids that really hepls us! Thanx❤
@ConscriptReporting3 жыл бұрын
I swear. I am at "to simplify radical expressions" already and I was given numbers like 180,360 etc and I seriously cant do it. I really loved this video so much Thank you ma'am!!!!!
@LetsDoMath3 жыл бұрын
Thank you very much! I think the next one, with the repeating primes is possibly a bit better. It also has some music I thought was kind of fun for the part where you collect all the primes. I think maybe I had a better handle on the process on the next one. It might be a bit clearer. On this first one I was so excited I'd worked a way of doing it on paper I had to get a vid out immediately. With your 180,360... are you using repeated division using prime divisors? That's a stinky one, by the way; I just did it. Do you know the rule of divisibility for 3? I have a vid on it. Here's the link: kzbin.info/www/bejne/rpXYn6tpfseem6s I got down to 167. It looked fishy so I googled it: it's prime. Like I said, that's stinky. If you didn't already know the rule of divisibility for 3, this is really going to help you on your prime factorization problems. 😉🤗😎💕
@ConscriptReporting3 жыл бұрын
@@LetsDoMath OMG THANK YOU VERY MUCH MA'AM. A SUB FOR YOUR EFFORT =)
@LetsDoMath3 жыл бұрын
Well thanks very much! Did that help? Hope so. 🤗😉💕
@jobbap66696 жыл бұрын
It'll be harder to just remember what to multiply with what for the combinations
@SunitaSharma-dg5yh4 жыл бұрын
Yes
@Dezignfuzion4 жыл бұрын
You could get stuck multiplying forever if you lose count
@goldenbutterfly20135 жыл бұрын
How do you know if you have correctly multiplied all of the conceivable combinations of prime numbers together? That part is the only part that is confusing to me.
@LetsDoMath5 жыл бұрын
Hmm. I haven't come up with a 'how to check you've got them all' strategy. Just this, to make sure that you've got everything. Sorry, I don't have an answer to your question at this point except to ask for care and attention as you're going at it. Wish I had a definitive answer for you.
@bujoandbinder32352 жыл бұрын
After going through your video and working out the factors for 210, I tried working out a random number, 432. I'm confused with how this method works with a number such as 432. After prime factorizing I'm left with 2 to the power of 4 and 3 to the power of 3 and I'm not sure how that works to show me all the factors of 432. How would you work out 432?
@LetsDoMath2 жыл бұрын
I made a second vid on this method covering a number that gave repeated primes. That will help you. It’s in my playlist Factors, Prime Factors. If you go through my website letsdomath.ca it’s even easier to locate.
@bujoandbinder32352 жыл бұрын
@@LetsDoMath Thank you so much! I’ll check that video out now.
@clashwarofficial29023 ай бұрын
I am in class 11 th but i am struggling in that 😂😂 thanks for the video😊😊
@leah2511 Жыл бұрын
QUESTION: How do I do the combination part with 3 factors instead of 4?
@pjfurious13784 жыл бұрын
And I thought i was the only one to know this in grade 8 but looks to me 6 years later its been discovered in a bit harder way😂
@LetsDoMath4 жыл бұрын
Ok now you have my interest piqued. I want to see your way to find all the factors! You got a vid on this? I gotta know if there’s an easier way.
@pjfurious13784 жыл бұрын
Let's Do Math It is very much the same idea. But the way its done makes it easier for like the factors ending up like: 2x5x11 where it is 11 to the power of 2
@pjfurious13784 жыл бұрын
Let's Do Math I dont have a video because no one ever understood me when showing it.
@pjfurious13784 жыл бұрын
Let's Do Math ooo yea. And mine will show you if it correct.
@LetsDoMath4 жыл бұрын
PJ Furious will you post a video on this? If there’s something simpler or more elegant, I would love to see it.
@kishkash98021 Жыл бұрын
Im in grade 6 and im preparing for grade 7, thank you alot
@ricardotijerina8865 жыл бұрын
Awesome channel and your accent is beautiful :)
@LetsDoMath5 жыл бұрын
Thank you very much! I’m so happy to help. 😃😎☺️
@DasLakhwinderBataleWala5 жыл бұрын
my exams are coming i am trying hard by watching videos of you i am understanding much better
@LetsDoMath5 жыл бұрын
That’s great, Lakhwinder. I’m pleased the videos are helping. 🤗😃😎😉
@swethajagadeesh281117 күн бұрын
OMG! Im grade 6 and im already learning this for the test and thank you very much ❤❤
@snehalatha93264 жыл бұрын
Your videos are really nice 👍 . I found this video when I was in trouble in finding factors of a factors fast 💨, and as a coincidence my hard number was also 210 😊😊🙏🙏😯😯
@LetsDoMath4 жыл бұрын
What a nice note! I’m glad my video helped you. It’s good todo a bunch if prime factorization problems - it makes your math muscles stronger 💪 😉😃😎💕🤗
@hemantyadav88256 жыл бұрын
Great trick, mam. Thanks a lot have a lovely day
@LetsDoMath6 жыл бұрын
Thanks, you too. 😃🤗😎
@poosarlasp4 жыл бұрын
ths video is so nice! i got how to find all the factrs of a number
@LetsDoMath4 жыл бұрын
GREAT! Well done! 😃🤗🤩💕
@snehalatha93264 жыл бұрын
And from this time I am going to see your videos when in doubt 🥰🥰🥰
@LetsDoMath4 жыл бұрын
Perfect! I’m always happy to help. My videos are sorted into playlists so you can quickly find what you need. There are more playlists than you can see on one screen, so you have to use the arrow to move to the right and see more. 🤗😃😎💕
@rauldempaire53303 жыл бұрын
Miay God Richly Bless you! That 's a great help for my grandson!
@LetsDoMath3 жыл бұрын
Fabulous! I’m really glad it helps him. I’m not sure if the second video I made on this is simpler to understand; you can be the judge on that. But that one covers a number that features repeating primes, and I think that’s a useful thing to see too. 😃😎💕
@nathannael43752 жыл бұрын
Love this. Time to teach to my students :)
@LetsDoMath2 жыл бұрын
Thanks very much! I think they will really find the next one helpful too. That has an example with repeating primes. It’s also in the playlist Factors, Prime Factors. 😃😎🤩
@Majesty_Lord Жыл бұрын
I already graduated from college and now Im preparing for a board exam and I completely forgot how to do this lol Thanks a lot
@afieql4 жыл бұрын
Omg thank you so much it really helps me in exam ,
@LetsDoMath4 жыл бұрын
My pleasure! 😉🤗😎🤩
@reemasarkari5148 Жыл бұрын
Awesome tricks, keep this up.
@rajsharma3240 Жыл бұрын
Your videos are very helpful 😊😊. Can you upload a video on adding and subtracting integers.
@d1sco_rpses3 жыл бұрын
Tysm now I can solve all my math problems ❤️😁
@LetsDoMath3 жыл бұрын
Happy to help
@hellenlebepe927310 ай бұрын
thank you ma'am you helped us so much.
@LetsDoMath10 ай бұрын
Glad to help. 🤗😃
@Adriaan.J.L4 ай бұрын
What a method! This is INCREDIBLE!!! Thank you so much
@LetsDoMath4 ай бұрын
Take a look at the second one too, with repeating primes as part of the decomposition. Tbh, I don’t know that we need this very often. I came up with this method in answer to the really horrible times when I’ve seen a class be told to find all the factors using ‘guess and check’. That approach is disheartening for me, never mind seeing kids’ confidence get crushed that way! We want to enable kids as mathematicians, not leave them feeling unable to do it, or even find a way n to start beyond crappy guess n check!
@jessicazylstra83073 жыл бұрын
TYSM!!!!! This makes so much sense! I am in Pre-calc10 but couldn't understand the way they were explaining it. Thanks again! :)
@LetsDoMath3 жыл бұрын
I’ve NEVER had it explained to me at all! It’s always seemed like some kind of arcane magic that I just couldn’t get. Then when I thought about it through prime numbers, I came up with this way of combining them, and it really works! The second vid, which has repeated primes as part of the prime factorization is maybe a bit easier to understand. Plus it’s got a fun little music break during the phase of pulling out the different factorization. Anyway... I’m really pleased this helps you too! 😉😃🤗😎🤩
@mabimabi2123 жыл бұрын
I just spent precious minutes trying to factor out 468 when I was supposed to be factoring 225. Nevertheless, thank you very much!
@LetsDoMath3 жыл бұрын
That was a 'D'Oh!' moment then. I've had them too, don't worry. Look at it as a practice run. Seriously, I'm very glad this helped you. Every time I do this I can't get over how cool it is! I've seen students be given 'guess and check' and faff about with that for a whole lesson period on just 2 numbers, getting increasingly frustrated as they go along. If they stick with that approach, they will forever think it's some crazy magic thing they can never get. This way, we have a tool to use and we can get to work and get the job done!
@mabimabi2123 жыл бұрын
@@LetsDoMath Yeah your method works really well! Thank you again!
@mabimabi2123 жыл бұрын
@@LetsDoMath By the way, could you please tell me what to do when a number has more than 4 Prime Factors like 2592 which has the prime factors 2*2*2*2*2*3*3*3*3?
@UmeR_UFA3 жыл бұрын
Wow Im really shocked I just found a new way to do this thank you so much from saving me from detention :))))
@LetsDoMath3 жыл бұрын
Great stuff! Now watch the second video on this technique to seal the deal. I nailed it in that video. 😉😃🤗😎🤩💕
@UmeR_UFA3 жыл бұрын
@@LetsDoMath alr ill watch it rn
@Ralphlauren2632 жыл бұрын
I'm grade5 and they give us these numbers
@AmandeepSingh-vp1lu4 жыл бұрын
Good information 👍
@LetsDoMath4 жыл бұрын
Cheers! 🤩😎💕
@clintonminto812611 ай бұрын
Thank you so much I've been looking all over for this I'm terrible at math
@LetsDoMath11 ай бұрын
Thanks very much, I’m glad it helps. If you use my website letsdomath.ca you’ll easily find lots of stuff to help. It’s all set out in topic groups and leads you through each area I’ve covered. There is a second vid I made using this method for finding all the factors, and I think it’s really helpful because it uses repeating primes, and in that vid I use both dividing by a prime to reduce the number, and factor tree. You can do that - mix and match methods for ease and speed. I should say that often, Factorizing questions have smaller numbers, and often you can do them just with your tables knowledge and not need this method. I made these videos because I was upset by something I saw in class one day. As a supporting supply teacher, I observed students given values to factorize that were too big for them and they were told to use ‘guess and check’ to find every factor. Those poor kids struggled and felt so discouraged by the end using this miserable time-wasting ‘strategy’. So I thought up a way to solve anything a teacher might reasonably throw at you. I hate wasting time in math class, there’s a lot to get through and confidence is built by feeling success, not by being discouraged because we haven’t got the tools to solve a problem. Now you have the tools! 😃🤗🥰
@dragonflame43733 жыл бұрын
Thank you for helping.
@LetsDoMath3 жыл бұрын
My pleasure!
@johnasebastian1872 Жыл бұрын
I am 6th with my term exam coming up i needed this soo damn much thank u very much u have earned a sub
@kai_core2 жыл бұрын
Im in 5th grade but like dude we learnt prime factorisation in 4th LMAO,but this helped a lot thank you so much!
@ruchitadharmapurikar76411 күн бұрын
Thank you very much. Good work 👍🏻👏🏻
@LetsDoMath7 күн бұрын
🤗😃🥰
@rishabnair15997 ай бұрын
Thank you so much you don’t know how helpful this was 😭
@LetsDoMath7 ай бұрын
I'm so glad!
@harikumar14642 жыл бұрын
It helped me a lot. Thank you ma'am..
@LetsDoMath2 жыл бұрын
Great stuff. Did you see the second vid on this as well? That uses a value that decomposes to repeating primes (2s and 3s). I nailed it on that vid! 😃🤩🤗😎😉
@MIST.STARSHINEАй бұрын
THANK YOU SO MUCH!!!,ThE PEN AND PAPER METHOD WERE WERE LIKE LITERALLY,❤❤❤❤❤❤❤
@wonderfulgamerz58752 жыл бұрын
Thank you so much my all doubts are clear you are the best explainer I am wish your channel gives 500k subscribers
@LetsDoMath2 жыл бұрын
Thanks very much! Glad to help. I think the second video might be even more help. In that one I have an example where there are repeating primes. 😃🤗😉🤩
@jayashree252 жыл бұрын
Thanks a lot. I just found that how to make it easier for my boy, who is in class "3". And here I got it. Thanks a lot mam.
@LetsDoMath2 жыл бұрын
Most welcome 😊
@Rehan_Fifa3 жыл бұрын
Thanks.it helped me alot
@LetsDoMath3 жыл бұрын
Great stuff! Glad to help.
@Haydon20202 жыл бұрын
Hello, so I was wondering why we used 2 to divide 210 and used 5 after.
@LetsDoMath2 жыл бұрын
Hi there. Just my personal preference, really. Any time I have an even number I just always start with 2. Of course you could also start with 5. Order doesn't matter as long as you pick all those primes up - just whatever seems easiest is fine.
@Haydon20202 жыл бұрын
@@LetsDoMath Thanks, But I was wondering why you used 5 other than any other numbers.
@circlefour57762 жыл бұрын
thank you so much you don,t know with this method i definetly save my very much of time in exam
@zainab-ok7ij11 ай бұрын
It's really cool to find all factors of any number but what if the prime factorization gives us factors of more than 4 digits how do we will make pairs of factor to get final answer ?? I hope you will answer my comment so I could be clear until exams
@veenaramesh24883 жыл бұрын
Thank u very much for the video
@LetsDoMath3 жыл бұрын
My pleasure. 😃😉💕
@Ben-wq7mi4 жыл бұрын
This video is very helpful thanks.
@LetsDoMath4 жыл бұрын
Good to know. Glad to help.
@rifdipro5546 Жыл бұрын
OMG You don't know how much time I save with this trick. And also, the way you explain the trick is (way easier than my teacher) tysm!!
@LetsDoMath Жыл бұрын
I actually hated those questions in school - it’s a way to take the whole math period with awful guess-and-check, leaving a person feeling not even close to being good enough. But that’s a load of rubbish, because it’s just that we hadn’t been taught a way to find them all. Once you know this, those questions take their proper place… something you can deal with and move on. Then you can go off to do something more interesting instead. Guess and check is horrible - it means we need a solid strategy and we don’t yet have it. If your teacher tells you to use ‘guess-and-check’, I recommend bugging your teacher for a working strategy that lets you move it. 😉😃🥰
@preethguthal Жыл бұрын
I'm preparing for 11+ it's so useful
@LetsDoMath Жыл бұрын
For 11+, make sure you are strong in multiplication, and ho through all the fractions stuff you have covered so far. Review and sort out any issues with practice and vids on www.letsdomath.ca I hope you breeze through it with ease and confidence, to a stellar result at the end. 🤩🤗👍😃
@iaindumper28903 ай бұрын
What if one of your prime factors appear more than once on your factor tree?
@rootsplayz8651 Жыл бұрын
Thanks for telling I think I will do Great on my test thank you so much :)))))))))
@LetsDoMath Жыл бұрын
The second vid, with the repeated primes is maybe even more helpful.
@rootsplayz8651 Жыл бұрын
@@LetsDoMath Thanks but I've already done my test, after watching your vid the test was easy!!
@rootsplayz8651 Жыл бұрын
I got 37/43 LETS GOO THANK YOU SO MUCH
@Wet_Bananan2 жыл бұрын
Thank you Let's Do Math i understood very clearly may god bless you :)
@markgilbert98833 жыл бұрын
Got bored during quarantine and felt like doing random math , but extremely amplified for fun. Long story short I ended up needed all the factors of this one number that is in the quintillions. I tried my tried and true guess and check method and after not even Making it remotely close to getting all of them that way, I tried using online calculators to cheat and give me the answer. Problem was that the numbers I was using were too much for any of the online calculators to do. I'm hoping this method works at getting them all. 🤓
@LetsDoMath3 жыл бұрын
Well if you ended up creating a number that has hideous primes, it's not going to work, cos you're not going to spot them. If worst comes to worst, you can always go techy on it and use a prime factorization calculator...
@robot65211 ай бұрын
But how should I do it with 108? With this method I get 10 factors, not 12 based on google
@LetsDoMath11 ай бұрын
For 108, you know that’s from 12x9, don’t you? Do you get that right off the bat. It’s even, so you know 2 is a factor. Divide 108 by 2 and get 54. Divide by 2 again and get 27. 2 crops up twice so 4 is a factor. Divide 108 by 4 and get 27 (already found that one, but you can see now you’ve confirmed 4. Think about 3… is it a factor? Well 3 is a factor if 9 and 12… yes it’s a factor. 108 divided by 3 = 36 Thinking in terms of those rainbows we use when we start factoring… 1 x108 on extreme outer edges Then 2x 54 Then 3x36 Then 4x27 2 and 3 are factors, so 6 is too. 108 divided by 6 = 18 Then 6x18 And in the middle spot, 9x12 You do get 12 factors. Did you forget 1x108?
@dogeyanimates21309 ай бұрын
@@LetsDoMathI have so much respect for you, that you came back 6 years later to answer a struggling student’s question. Thank you for all you do.
@architect.anoopdevaziaАй бұрын
Thank u, i was looking for this
@24kmegaswavvy8611 ай бұрын
Wait but why does it have to be divided by 2 and 5? What is it’s another number like 190. Do I still divide it by 2 and 5? (I really need an answer)
@LetsDoMath11 ай бұрын
You’re looking for the obvious primes by which you can divide. 190 is even so you can divide by 2, and as it ends in 0, clearly 5 is a factor (and 2x5 = 10 and that’s a factor of 190). Equally as 190 is pretty straightforward you could do a tree diagram to break it down and show it as 10 x 19. 10 is from 2x5 so the primes are 2, 5, 19. Multiple ways in, it just depends on the question asked and how you want to approach it.
@prabhakarankumar93454 жыл бұрын
Thank u so so much 💕 this is very helpful for me 😊
@LetsDoMath4 жыл бұрын
Thanks for your note, I’m glad I could help 😉😎🤗😃🤩💕
@AbhishekKumar-hk6zw Жыл бұрын
Good great job
@asheep77974 ай бұрын
Hey, I need help factorizing this beast of a number: 2,216,593,220,330,143 All I know is that it is the product of 2 primes.
@matildaswathi35944 жыл бұрын
Wow... that's great! Thank you so much
@LetsDoMath4 жыл бұрын
My pleasure. 🤗😎💕
@gochu1651 Жыл бұрын
is there a quicker way to find out the factors of 551 without repeatedly pressing the calculator? my lecturer seems to like to find these kind of numbers where u cant divide them out as shown in your method...
@LetsDoMath Жыл бұрын
So your lecturer is trying you hard. As life’s too short for trying out various tough primes as factors… I cheat! Here’s my cheat: in your search line put in Factor Finder. Pick one, put in your value. That’s what I did and discovered its factors are 1, 19, 29, 551. Since this is about using the thinking, I don’t get why you’d use primes like this to create your number. Without an online sensible search (aka my ‘cheat’) you’ll be at this all day. Sorry that was the problem you were given. So here’s what my next move would be, in your shoes. I would create a similar number, say 23x41, so the number is 943 I’d tell my lecturer that I didn’t get how to approach this when you have a bigger number with no obvious ‘way in’, as in the numbers I create for students, and worked on in my vid. I’d show them the number and ask for a demo of the thinking so I can improve and do this too. BUT I will also put a caveat in that. I don’t know your teacher. Being able to swing this kind of interaction relies on delicate handling, and you have to be able to really ‘read’ your prof, know how far you can push it, because some people might get angry at this scenario, seeing it as cheeky, or a challenge. For me, I want to learn, as I’m sure you do too. If a prof gives a problem like this just as a ‘busy work’ tactic, I have no time for it. I devised this method so we can get away from that hideous guess and check, and now with this problem we’re right back at it. If you get more info and further help from your prof, I’m keen to share in that learning too. Best of luck. 🤞😃🤗
@entertainmentvibes4510Ай бұрын
Can we do this method to find all the factors for MTSE exam
@Ralphlauren2632 жыл бұрын
Tysm it helped me so much
@sivakamijayakumar41313 жыл бұрын
Superb trick thanks for helping with my exam 🙏🙏🙏
@LetsDoMath3 жыл бұрын
Look at the one on repeating primes too. I think that’s very helpful.
@kennalvarorumbo48312 жыл бұрын
Thanks. It helped me so much. 😊
@LetsDoMath2 жыл бұрын
👍 Great stuff! 😃
@memesbreak35546 ай бұрын
congratulationssss u got a new sub
@LetsDoMath6 ай бұрын
Sweeeet! 😃🤗
@rekhainiyarasan89842 жыл бұрын
I have a doubt in this video... You told that 210 is even so we divide with 2 but what do we divide with if the number is odd?
@LetsDoMath2 жыл бұрын
When we have an even number, my 'go to' method is to divide b 2. But with 210, I could also have started with 5. You ask how we choose a divisor if we have an odd number. That's when your knowledge of the rules of divisibility comes into play. I have videos on that here on Let's Do Math, or you can use this link: www.letsdomath.ca/contents and scroll down to the section on Rules of Divisibility. The rule for divisibility by 3 is the one you MUST know: if you add up all the digits in your number, and they come to a value in the 3x table, then 3 is a factor!
@rekhainiyarasan89842 жыл бұрын
@@LetsDoMath Thank you for your speedy support!
@gloryk-dt5wf3 ай бұрын
This method is very good nice
@NeeraPandey-sk6tn4 ай бұрын
So what to do when the numbers in😢 the LCM are same
@atulpanthri4729 Жыл бұрын
Nice thanks
@LetsDoMath Жыл бұрын
Glad to help 😃
@gayathri.k.j316 ай бұрын
Thank u so much i love ur work❤
@LetsDoMath6 ай бұрын
Thank you so much! 😃🤗🥰
@gamermon3786 Жыл бұрын
Really cool vid!! But what if there is a number like 161. Im really stuck there so can you answer me?
@marschocobars Жыл бұрын
1. i love your pencil pfp!! 2. What is the main problem with finding out the factors of 161? just do the process but divide it with another factor that isn't 2 (since 161 can't be divided by 2)
@gamermon3786 Жыл бұрын
@@marschocobars ty for the compliment and ty for the answer!!
@marschocobars Жыл бұрын
@@gamermon3786 youre welcome!! i just had a test w HCF and stuff recently so this was also useful for me :3
@DeepakSINGH-px5md3 жыл бұрын
How can we find factors of a number having less than 4 or more than 4 prime factors what wiil be the possible combination?
@LetsDoMath3 жыл бұрын
No matter the number of primes you get, you combine them in the same way: all possible combinations. The second vid has a number with repeating primes in its factorization: it will help you to take a look at that as well.
@all_gaming_pro2096Ай бұрын
Ohh my god broo these Americans learn about prime factorisation in grade 8 😂 but in India they teach us in grade 3 and 4 above that 210 is big number got me 😂
@Jay-pm5ql3 жыл бұрын
im tutoring a grade 5 student thats why i need this
@LetsDoMath3 жыл бұрын
I wouldn't use this with grade 5. Unless this person's a mega-brain, I'd use something much more accessible, like the one where we list them all line by line. In my playlist Factors, Prime Factors, it's the second method, 'Find all the Factors, Next Step'.
@tapasdas57213 жыл бұрын
Thank you soo much it helped me a lot !!!❤❤😊
@LetsDoMath3 жыл бұрын
That’s great! Glad to help. You might find the second vid on this very helpful too. That one uses repeating primes: 3x3x3x3 and 2x2 if I remember my values right. It has a fun little bit during the collect all the factors step... Its also in my playlist Factors, Prime Factors. 😃🤗🤩
@briandacosta59133 жыл бұрын
Thank you ma'am..
@LetsDoMath3 жыл бұрын
I’m happy to help. The second vid, where there are repeating primes is also very helpful and it may help you set the seal on this process, seeing it a second time with different numbers. 😃🤗😎💕
@advgym2 жыл бұрын
Ok, why did you divide by 5 after dividing by 2 in the first example of dividing 210?
@LetsDoMath2 жыл бұрын
Half of 210 is 105. Anything ending in 5 (or zero) is divisible by 5. I always take the easiest and most obvious divisor and use that.
@advgym2 жыл бұрын
@@LetsDoMathI had no idea. Now for the hard part that you’ve more than likely made easy! Thanks so much!
@LetsDoMath2 жыл бұрын
@@advgym glad to help. What’s the number you are doing? I’ll do it alongside you right now. I’m not ready for supper yet and I’m into this!
@ceceliaatkinson99203 жыл бұрын
What about when there are exponents involved in the prime factorization
@LetsDoMath3 жыл бұрын
I made a second vid for examples where a prime is repeated. You will find it easier to get to exactly the right video by using my website as your portal to the videos. Here’s a link to the contents of my KZbin channel www.letsdomath.ca/contents
@methukisandulya56274 жыл бұрын
Ooo thx so much.it was really helpful.i was stuck in finding all the factors but now I’m super okay!!😃😃😃😍
@LetsDoMath4 жыл бұрын
That's fabulous! Well done! This will no longer make you waste time struggling then. Without this method, I faff around for such a long time!
@zongyuzhang21272 жыл бұрын
This video is awesome, but I have a question! Do I have to check every time if two numbers have to same product as the 3 prime number product for the combinations part? thank you so much!
@LetsDoMath2 жыл бұрын
Did you look at the second one, where there are repeating primes? I think seeing it a second time with different numbers will help. Basically it’s just combining all the primes in every possible combination. And to be honest, I doubt this will come up much. In a test or exam it’s likely much smaller numbers. I came up with this method because that whole ‘guess-and-check’ method wasn’t cutting it. And seeing students struggle and just give up doesn’t work for me. We need a system to ensure we catch them all. Then it takes on an aspect of fun because you can actually do it. When you’re in guess-and-check, it’s such a frustrating state, in my view.
@beatriceokoro84403 жыл бұрын
Thanks ma'am, you just saved my grades
@LetsDoMath3 жыл бұрын
Excellent! Way to go, and good for you! I helped, YOU did the work. NICE! 😃🤗🤩💕