Addition and Subtraction of Small Numbers 

I'm 26 turning 27 years and this is the start of my journey to becoming a chemical engineer. Going back to the basics and work my way up. Never to late to start👊

I'm tired of being dumb, so imma watch this teacher's whole series and put some effort into it. Wish me luck friends

~Studying physics at university. ~Realises for the first time subtraction is not associative. ~Mind explosion.

I know this is 'easy' stuff. BUT this is why I believe I need this. I was belted and shouted at so many times in all the years of maths (at school) for asking for things like where did maths come from, fairly basic questions for kids you'd think It actually makes recalling how to add and other basics really hard under pressure (like when there are fractions or any conflicts in the room!) because of the many teachers who had nothing to give because they in turn had also been badly taught. It's resources like this video where maybe there is a chance that I too am allowed to know some of the mysteries of the universe that educators of several generations in the last century made sure to deny access to.

I'm so so weak in mathematics. But I want to get a good job and most interviews want you to do a math test, and they're not always easy for me. Thanks for making these videos.

I wish my self good luck because am gonna try and study all the whole series 😊

This series is much appreciated, you put in that perspective and rhetoric most teachers assume un-necessary. I'm starting rather fresh having forgotten most everything post elementary school due to injury; I'm starting right here at the beginning for completeness sake. Hard to know what you've forgotten until its sat in front of you equal parts familiar & new.

going on 25 and always had a hard time with math glad to see you making it not to kid friendly while not to serous, a real good video.

My Plan? Learn all of mathematics, learn all of physics, build my own spaceship, fly around the Earth, have fun. Will it happen? Probably not, but time can only tell. Interstellar here I come.

This lesson was a bit to difficult maybe we should step it back a bit.

Even this video on the simplest of math concepts is filled with brilliant perspective and insight. I never applied myself in school ages ago, but I have recently taken an amateur interest in physics. Rather than make any assumptions about how well my memory is working, I figured I'd start at square one. This series is exactly what I hoped to find. Thanks!

Thank you so much for explaining this from the beginning. It seems to be something that no ones wants to do or put into words.

You might think that because this is Kindergarten math it might not be interesting, but when you learn it in Kindergarten they don't explain the "why" to ANYTHING because you're a stupid, wild child who needs to be bribed with gummy candy to sit still and do your homework. Explanations go over your head. By the time you're old enough to comprehend any you're already out of school and so unless you refresh yourself it remains unexplained. All of this means that, even though I know what 2+2 is, this is still blowing my mind. Explaining what equation means, WHY something subtracted by another is what it is, instead of just saying THAT it is, all of that and more is completely glossed over when you first learn it. Learning it for a second time here is, again, blowing my mind.

Even as a data scientist and analyst, this is good to remember the beginning!! Thank you!!!

I really want to thank you Dave, what you are doing is truly amazing. I started understanding math even though I disliked it all my childhood. Great job!

Im a sophomore in highschool rn, i missed many years of elementary school and middle school math nor understood cause i moved countries at a young age and i dont even live in a english speaking country nor did i come from an english speaking, ive missed alot of math which is why im horrible snd worried about my grade and i hope this video can help me get better and i will be starting watching the playlist from this video to the 61st video on the playlist, its summer rn aswell meaning i have alot of free time and this is perfect, ive had tutors but they never really helped me but i hope this playlists helps and saves my math grade and my grades will be alright and i wont stress as a result and everything is going to be okay cause i wont give up nomatter how long this will take, thank you for making this playlist and helping others with math 🙏

I will be watching complete series hope it gets me a bit higher grades in maths

4:53 omg I’ve been doing this wrong my entire life!!!! Its so easy just count the difference from the higher number to the lower number, wow I’ve been trying to subtract long subtraction in my head this entire time now I can do it in 10 seconds I’m 23 and look at there’s still things you can learn even at the basic level thanks!!!

This set of lessons is going to be so helpful. As someone who left school so many decades ago and needs to be reminded of the basics again.

Thank you teacher Dave , I finally see hope of learning maths with interest and ace it. I'm currently in 7th class, maths has been very difficult for me since pandemic has striked and I never understood anything. I think it's not too late to start again ! I'll update when I'm good in future ❤❤

Thanks for this Dave. Don't know how far I'll make it, but it would be super awesome to end up understanding your modern physics course some time down the road after starting here. Thank you for helping spread knowledge for free!

I was going to skip over this video because i already know basic arithmetic but i still ended up learning something new here. Many thanks.

I m learning more with these videos than 3 years of college math !!! thank you professor Dave !!! you are the best teacher there is !!!

This is so awesome! I love it! I love learning math skills all the time, because you have to go back all the time and review. Good job dude! ❤

Very much thankful to you for this kind of most essential series! May god bless you!!

Thank you so much for these videos! Exactly what I was looking for. Very much appreciated. Thank you for doing these.

Thanks a lot Professor Dave. Wish we had wonderful teachers like you back in school days. God Bless You.

i'm starting this series, thank you professor dave!!

Yay I'm learning

Thanks for producing this series!

thank you for being such a great explainer, even down to the simple things like this i have a lot of pressure to be smart/do well on testing because i am relatively smart and do exceptionally well on testing but im at a point where i havent learned what im being tested for but to learn it i'd need to learn the fundamentals again cus my brain is wacky im going to watch this entire math series so i can better understand your other courses/playlists rather than trying to pick up algebra after forgetting everything beforehand unless forced to remember during testing

I'm originally Arabic from Tunisia and i get out of school long time ago and i couldn't do anything in my life and now im thinking to Go back and enroll in an online high school and since that's possible only if u speak English i have to start many Curricula and materials fro scratch....i really appreciate this channel and special appreciation to the professor... thank you sir i hope one day i get my high school diploma ....shokran❤

Best channel to learn math, thanks Professor Dave!

Awesome ! The best , loved it , very helpful , am very grateful ! Thank u very much professor Dave !

I’m just starting out with this series. I’ve been through college algebra/trigonometry formally and used trig and algebra fairly often in my career. Now, I’m retired and trying to brush up on my science education, but I find things either too simple or I don’t understand the math. Hopefully, I can get refreshed back to where I was, though it was 35 years ago, and go beyond. I’ve always found calculus a bit mystifying, as well as anything beyond. But, I like your style of explanation, and find I can understand what you explain pretty well. Thanks in advance, Dave!

Thank You! Professor Dave.

Thank you so very much, i completed high school five years ago but the introduction of mathematics and the addition and subtraction woo thank you. I am here to stay and learn more.❤

Good teachers and content is so needed on TV. With out STEM we can't advance and solve the worlds big problems

As an Indian, I thank you for these lessons! No one in India teaches Maths like this. And just because I never learnt the core concepts I always hated Maths. I always found Maths pointless to learn. But when I grew old and after I realised the universal nature of Maths, I have decided to relearn the Maths. Glad, I realised the importance in this lifetime. Really glad!

Thank you for this wonderful lesson! For now I understand everything 😁 seriously, the best teacher ever!

really well explained. appreciated

Awesome. Thank you very much!

I've had a Iffy highschool education definitely watching the whole playlist thank you

I love you bro. Im studying for my GED and you are the holy grail i need. 👍🙏

OMG! This kind of stuff always gave me an instant headache and now I can't wait to get to the later chapters! Hooray!!!

Thank you, professor!

You're an inspiration 😇. Thanks a lot Professor Dave 😄

just started this series and i am very excited to see how far i'll be able to go

Wow...well explained...

Awesome! Love it!💥

Certainly Dave is great!

Thank you for your content teacher Dave..😁

Thank you very much professor

Superb Explanation Sir......

this helps so much you have no idea, not sure if it's because of amnesia from a thing i have but i never learnt what that hopping arrow thing was supposed to actually be and it drove me crazy that it never got explained properly it makes SO much sense now thank you

Love your teaching 👍❤️

Just started today. I was at the point of giving up on everything, but life gave me second chance. So now I'm trying get back into studying so I do not drop out of Uni. Mathematics seems like a good place to start. If I am able to master this, maybe every other challenge in my life will seem easier to handle. Let's see how this goes.

thanks for this lesson

Im from south America, and i need this class for learn english and mathematics, Thank you so much.

...for what you do -- you are genius. May God bless you...

I really want to study Astrophysics but I'm scared of the math. I 'm dedicating myself to this course for the next few months so that I'll be ready in the Fall. I can do this. I can master math. Thank you for much for this indepth breakdown. I'll porbably comment on every video I watch as a check mark ;)

Thanks dear professor

thanks for the help

Thank you so much

Thanks again 👍

You gotta start somewhere, why not at the addition and subtraction of small numbers? Solid choice my man! 👍🏻

Well, hello, folks. I've come to this playlist to learn math, think math, and love math. I have come to a realization that my knowledge are too inclined on the humanities. As your relatively average teenager, I can multiply with considerably big numbers sure, do probabilities, and things like that. But I don't really like it because it's so confusing and that I am missing the necessary components to solve a more advanced problem. So, good luck to me!

mind blowing

Thanks!

0 in maths looking forwarding to learning from the beginning hoping to follow all the way to the end.

YOU SAVED MY LIFE, THANK YE

Best best best....only word i have ❤️ Love from India Guruji 🙏😃

I've never shown so much independent interest in mathematics, I'm 17 I would go to school and wishing the math reacher wouldn't show up, Now after realizing math is essential I'm here studying from scratch even though I do know the basics, But just in case I missed out something I can go over it

شكرا سيدي على المعلومات رغم أنني اعرفها الا أنني عرفتها بفضلك ...قد يبدوا هذا التعبير غريبا لكنه يعكس ما شعرت به فبعد مشاهدة مقطعك أحسست بقيمة مضافة تختلف عن المعرفة التي كانت لدي حول الموضوع.....شكرا مرة أخرى❤😊

8th grade is coming up and I suck at math 😔 hoping I can be the new Einstein after I finish this course

Wooooow Really Thank you!

Very nice video in maths

im starting this whole course, i had some past experiences with maths but nothing outstanding, i will keep you updates how it goes. psa- i will spend 1 hour every day.

Good lesson

sehr gut, danke fur lesson

I'm excited to see how far I can go in this language of mathematics

yeah professor Dave😍😍😍😍

Thanks pro.

So simple yet so profound

Dave has amazing mathematics language 😮😮😮

This video is helpful.

I don't know much about English but I really need to know what Math really is, thanks for your playlist btw, i wil learn it carefully.

If I only knew about this channel earlier. ❤

And because multiplication is a repeated additions, it inhibits the commutative and associative properties, and the same goes for subtraction and division, division does inhibit the properties of non-commutative and non-associative of subtraction. Thanks Professor for the tutorial.

For me, I am trying to learn where it all went wrong

I wish someone would of explained this to me in the same way you are, I wouldn't have felt so dumb growing up. I deeply appreciate you Professor

ive suffered major skill loss due to the pandemic and i hope to relearn all the basics, at one point i was gonna go study pure math at university ! the basics can sometimes be neglected which makes it hard to truly understand the complex math

Honestly, I’m not super lost on math but there were some little (but important) things I missed out on due to things completely out of control. I’m a sophomore now, and I had not been taught division and knew very little multiplication. Year after year, more and more was added. Being asked to build a house when I knew nothing past how to make the foundation. I’d be embarrassed when confronted, but also far too embarrassed to explain why I didn’t know. My childhood wasn’t golden, and it is something I found myself wishing to hide for a better image. I don’t think it helps that my brain has trouble even processing normal things. I’d been treated badly by a lot of people and now you could tell me the sky was orange and I’d doubt my eyes in favor of your claim. I’d feel the need to believe. You know whats terrible? I was shamed and they moved on. No one took the time to teach me. And I felt dreadfully ashamed to look it up. I got over it though, and here I am. No matter what it was that brought anyone older here, It's okay! We all have reasons and you being here and wanting to learn on any of these is wonderful. Lots of us had no control over it and no one took us back to the opportunity. I promise you all that math can also be fun, and very pretty when done correctly. (I love how it looks, and how nice it is to complete something complex) I’m proud of you. Refresh, relearn, or start-up. It's all very good.

5:34 "Subtraction is not commutative" THANK YOU! I was worried you were going to teach that BS they added in schools

Professor Dave please make more videos on maths now I like maths 😃😃

im brushing up on my math skills to get a masters in robotic engineering and i learned something from this video. idk what to think rn X'D

Ma shaa Allah ..that's an amazing work..respect from morocco

I saw some of your videos and I really liked it. I need help: what is the unit of curvature? Thanks in advance.

Nice

I always wonder "is mathematics apply on real world" I finally realized it does! Thanks 😭