Rational, Irrational and Real Numbers
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- čas přidán 22. 07. 2024
- At some point you are going to learn to classify and sort numbers as 'rational', 'irrational' and 'real'.
The traditional math definition can be a bit of a stumbling block, so I take you through what it means here in this vid, along with examples so it sticks. And the great news is that you'll totally be able to manage this stuff! At the end of the vid you'll find a handy little T-chart (perfect for your math notebook) which will be a 10 second revision tool in time for exams.
Please hit that like button, and subscribe if you haven't already.
Summary
0:00 - 2:00 making sense of the definition and rational numbers examples
2:01 - 4:05 irrational numbers
4:06 real numbers
Hugs,
Ms Steele
letsdomath.ca
Probably the best visual demonstration with great clarity. Thanks.
Possibly the best explanation about this topic! Thank you so much LDM.
I teach High School Algebra 1 and this is a perfect easy to understand explanation for the kids-great job, thank you!
i don't know what i would do without this channel
That is SO sweet, thank you very much, Rajesh. 🤗💕
had amath test and didnt know what this what and im sure i wont forget after this video, thank!
Thank you for this, it is the first time I have ever understood that topic
It is SUCH a pleasure to help!
I was reflecting on this yesterday after I uploaded. This whole thing of classifying them. I don't really see a point in that except for maybe an exam mark or two (and I'm definitely in favour of an easy grab on that!), but I suspect the reasoning behind learning this is in order to make negative fractions something that we can accept. If you can accept negative whole numbers (like negative temperatures), then you must be able to accept negative fractions.
I will be honest and say I think the formal definition is made by/for mathematicians (ie kind of dense and semi-impentrable for the rest of us). I think my interpreted definition will prove a lot more accessible to people. And the idea of being able to precisely put your number on the numberline is something we can all get behind.
@@LetsDoMath l am a mum, and we came access irrational numbers last year in homework and l was at loss as to how to help my daughter.
So this is something l will definitely be sharing with my daughters.
Bless you for the loving, generous, helpful person you are. Now I'm even happier to have helped. What age was your daughter when she first encountered this?
Omg this is so help full vidio last time i didnt understand i ask my teacher and he explain for me but i didnt understand and when i find on youtube i was so happy and i saw the vidio i was so impresed and now i understod about rational and irratinal numbers thank you so much i appreciate that so please make more vidios
Glad to help! 😃🤗
This video thought me rational and irrational numbers so quick and easy.
Glad to help
I just got 100% 2 times in my maths work, thanks for the help!
Excellent! Good for YOU! 😃🤩😎🤗
Thanks
Hi please upload video on geometry drawing angles
this video really helps more than any other videos out there. tysm!
Glad to help you make sense of it. 😉😃
omg hello i didnt expect you to reply to this comment also your vids are very simple and easy to understand :D
@kulblox If I see a comment, I reply. There used to be a lot more interaction with viewers, but then YT forced most of my vids to be classified as ‘for children’, which means comments are not allowed.
@@LetsDoMath ohh ok i get it !
Tysm! This really helped me!
Excellent! Glad to hear that. 😃😉😎🤗💕
Hi!
Hope you are good 🙂
I had some problems with a maths chapter..and that is Simplification of linear Expression s with factional Coefficients..can u help me with that plz😁
I can’t creat a vid fast enough. I may get time to write you some notes to help. Sorry - teaching all day.
Thank you for making me big brain
My pleasure! That's a phrase my son uses... you made me smile with your comment! 😃🤗🥰
i have a quiz tomorrow thank you
Good work. how can I am sure I have reached to an irrational number because people do not posses super computers helping them to calculate trillions of decimal places? I will always be in confusion between terminating or non-terminating. Example in the case of PI they have calculated trillions of decimal places and based on the trillion of decimal places they claim that we have reached on an irrational number.
Pi is irrational because there is no pattern of digits. That’s your key. If there’s a repeating pattern, or it’s terminating (like 1/2 = 0.5) then it’s rational. 😃🤗
Yes I am ready to identify rational and irrational numbers
Great stuff 😃
got my test tomorrow wish me luck guys!
Best of luck! Keep calm and think clearly before answering - don’t rush it. 😃
I like it
Hey thanku@let's do math😚
My pleasure! 😃😉😎🤗💕
@@LetsDoMath 😃
Mathematicians usually find the value of pi and write it as 3.14 to keep the writing clean.😅
Is elenty twelve an imaginary number, I think it was in lord of the rings. I'm learning French I don't know if there imaginary or not but around 70 and 80 thet get wired. 20 x 2 + (1-10) you see what I'm talking about if you watch one of those tutorials
Bilbo was ‘eleventy-one’ (111), as I recall, at his grand birthday party at the beginning of The Fellowship of the Ring. That’s a fantastical number, created to appeal to kids.
Tolkien wrote his stories with his son Christopher firmly in his mind. You have to admit, ‘eleventy-one’ totally makes sense to a very young kid. Maybe it was something JRR Tolkien heard his son say when he was very small and perhaps he filed it away in his brain (parents remember cute/funny things their little kids say forever), and put it into his story. I like that idea.
As for French numbers, yes… there is a system. It’s logical, but the reason behind 4 20s, 17 for 97 escapes my reasoning.
By tens…
10 dix
20 vingt
30 trente
40 quarante
50 cinquante
60 soixante
70 soixante-dix
80 quatre-vingt
90 quatre-vingt dix
100 cent
Any time I’m relaying a number in French >70 and
Good
Thanks 😃
Hi l am in real don’t love math but your way in it so beautiful 🤩 ❤️♥️😅💕
😊 thank you. It's hard to enjoy math if you're struggling. I know, I did struggle in school, and lots of us struggle even as adults. That's why my channel and content covers the stuff we struggle with.I hope I can help students of all ages. Whenever we are having trouble, we need a no-nonsense way in that is easy to understand. I'm glad my lessons are working for you. 😃😉😎🤗💕
♥️♥️♥️
Thanks Lara!
I don’t understand fractions, can anyone help? I have a exam tomorrow
Letsdomath.ca has videos in order you should approach each skill , together with some practice pages to build you skill and confidence. The videos there are the same you find here, only the user interface makes it tons easier to find what you need. 🤗
This video is too underrated, give it more attention guys.
Thank you soo much
Glad to help! 🤗😃
Thanks for explaining e
Thanks 😊😊😊😊😊😊😊
Happy to help
My pleasure!
I am not understand
The denominator can’t be 0 not even -0 because -0=0!
Ty tr
I didn't learn this in class yet so I'll be the topper in class ysm
Glad to see your are building confidence. Great stuff!
Its me dante
Dante Braithwaite?
Yes its me Dante Braithwaite
@@boba3340 😃🤗👋
I know 😭☹️☹️☹️☹️☹️
I don’t understand
Real numbers are numbers that can be found on the number line like 1,2,3 and -1,-2,-3 it can be positive or negative
An irrational number is a number that can be expressed as the ratio a
-
b
a and b are integers and b is not zero basically a can be a real number like 8,-8 etc the same with b but b can never be a 0
Tbh I cant explain wth a rational number bc idek