Rational Numbers - Introduction/Concepts & Examples | Class 8 Maths Chapter 1 (2022-23)
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- Опубликовано: 31 июл 2024
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✅ In this video,
✔️ Class: 8th
✔️ Subject: Maths
✔️ Topic Name: Rational Numbers - Introduction/ Concepts & Examples
✔️ Topics Covered in This Video: This video covers an explanation of rational numbers from Class 8 Chapter 1 as taught by Rahul sir. The topics discussed include a definition of rational numbers and an overview of key properties and characteristics, such as their role in the ordering of numbers, their use in math problems and calculations, and how they can be represented in the form of fractions. There will be examples and practice problems to demonstrate how to apply for rational numbers in math problems.
=======================================================
0:00 Rational Numbers Introduction: Concepts & Examples
1:21 Introduction
12:39 Properties of Rational Numbers - Closure
28:53 Properties of Rational Numbers - Commutativity
39:52 Properties of Rational Numbers - Associative
53:56 Properties of Rational Numbers - Example 1 & 2
1:10:47 Properties of Rational Numbers - Discuss Question
1:16:10 Properties of Rational Numbers - Distributivity
1:20:54 Properties of Rational Numbers - (Question - 1)
1:27:13 Properties of Rational Numbers - Example 3,4 & 5
=======================================================
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class 8 maths chapter 1 pdf with answers,
class 8 maths chapter 1 notes pdf,
class 8 maths chapter 1 test paper pdf,
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class 8 maths chapter 1 exercise 1.2 solutions,
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00:02 Introduction to rational numbers in class 8 mathematics
02:15 Numbers were invented to solve problems of measurement and expression.
07:05 Introduction to rational numbers and their relevance
09:34 Rational numbers are written in the form of expressions.
14:24 Operations with rational numbers explained.
17:00 Understanding mathematical operations and applying them to solve problems.
21:29 Rational numbers are also applicable in multiplication and division.
23:36 Understanding rational numbers and their properties
28:05 Closure property explained with examples
30:37 Introduction to rational numbers and properties
35:13 Understanding the concept of rational numbers and their properties.
37:38 Rational numbers can have different results when divided
42:12 Understanding the consistency of answers in rational numbers
44:29 Understanding division and its properties
48:59 Understanding rational numbers and their properties.
51:26 Rational numbers properties and examples
56:00 Understanding rational numbers and their properties
58:16 Understanding computational and associated properties in solving problems.
1:02:58 Understanding the concept of additive inverse for making the result zero.
1:05:36 Understanding additive inverses and their role in making numbers zero.
1:10:23 Reciprocal numbers and their properties
1:12:53 The closure property of rational numbers
1:17:38 Understanding the distributive property in multiplication
1:19:52 Equal distribution of items within a household
1:24:44 Multiplying rational numbers with the same denominator
1:26:48 Understanding the concept of additive inverse.
1:31:55 Understanding rational numbers and their operations
1:34:39 Rational numbers rearrangement and properties
1:39:06 Class 9 Math chapter videos are divided into separate topics
Crafted by Merlin AI.
9:56
10:06
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Timestamps for New Book (2023-24):
Introduction = 0:00 to 12:37
All the Properties of Rational Numbers (Closure, Commutative, Associative) = 12:38 to 54:02
Eg. 1 and 2 = 54:03 to 1:10:36
Think Discuss and Write = 1:10:37 to 1:16:25
Distributive Property = 1:16:26 to 1:21:00
Example 3 (Here Example 5) = 1:33:58 to 1:40:43
Thank Me Later! 😃
BTW, thanks Magnet Brains! You teach efficiently! I always enjoy these video lectures! 🙂
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Thanks for such a positive response. We are so glad that our videos have helped you clear your doubts. We hope to continue to provide you with helpful educational content.
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How commutative property is used in example1 56:18 please answer sir
The first question? commutative and associative one?
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I have my Maths Exam on 20th and I am watching all the chapters in the syllabus I need Today, Thanks Magnet Brains and Team
Thank you so much for watching our videos! We're glad we could help you prepare for your upcoming exam. Best of luck!
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pov:We already have cool and humorous teachers
But they don't make us laugh
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you
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112/21
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Sir in last question you used commutative property even for subtraction how's the answer same if commutative property doesn't hold for subtraction ?
Thank you for your thoughtful comment! The commutative property is typically used for addition and multiplication, but it is possible to use it for subtraction and division. In the given example, the answer is the same because we are subtracting the same number from both sides of the equation, so the difference between the two numbers remains unchanged.
@@MagnetBrainsEducation sorry sir I couldn't understand I am talking abt example 5 ( 01:34:44 )
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Omg pandey, Thanks for being active on the channel. Do recommend us to your friends.
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Sir but 22/7 irrational no. Hai and denominator 0 bhi nahi hai .....??!!! 28:37
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Thank you so much for your kind words! We are glad that our videos are helping you learn better. All the best for your studies and do let us know if you need any further help. :)
Hi tomorrow is my test and by your explanation my douts are clear
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Thank you for watching our videos and taking the time to write a comment! We're glad that you found our videos helpful and that they improved your understanding of the material. Best of luck on your exams!
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Your comment has been noted and we are glad that our videos were able to help you in some way. Best of luck for your exams!
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Beacuse my maths teacher she taught us that subtraction subtraction =subtraction it means -6-3=-3 and she made ncert wrong also told us to listen her coz she is topper in her time
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App hamare school teacher hote to achhe hota
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42:55 10 is not natural no. that's a whole no. you said earlier??
sir i have a question that if we done the associative property with rational numbers ex-(5 divide by 10) divide by 2 is 1 and we do the same with associative property both are same both you said that rational numbers are not closed under division
sir please tell i do not understand this
means? i can't get ur question . if you clarify wht you mean maybe i can help
Taught much better than others✨
Sadiya Ali, Thank you for watching. Do tell your friends about Magnet Brains.
Get All Classes & Subject Wise playlists here:- www.pabbly.com/out/all-videos-playlist
Yes
It is tought not taught
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You're welcome! We're glad we could help.
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Multiplicative inverse of 21/112=112/21
Sir you have a very good sense of humour... Your teaching is awesome.
Multiplicative inverse of -7/19=19/-7
Good
You have to find the multiplicative inverse of 1st one also that is -7/19 = 19/-7
Isn’t - for both 3 and 7 in example 5
This was really helping and I’m Preety disappointed to se in comments people are just making fun of some study materials or promotion please guys I really want to tell u don’t miss out like i did
This is good for you
But I also upload 5 video on rational number also
Achal Kumar Gupta
Thanku so much sir 🤍
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Hey there! Thank you so much for confidence in our videos :) We're glad you're finding them helpful in your studies. Wishing you all the best for your exam!
Same bhai
Thanks sir tomorrow will my exam
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M.P of -7/19 is 19/-7
M. P of 21/112 is 112/21
39:53 thank you sir ❤❤❤❤
Sir hm cross multiply kr ke nahi kr skte the kya?
Multiplicative inverse of 21/112 is 112/21 and -7/19 is -19/7
Neelam Tiwari, Thanks for being active on the channel. Do recommend us to your friends.
Yes, you are right 😅
@@MagnetBrainsEducation 😅
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Sir i have a doubt that natural number also comes in rational numbers and in closure property you have put a cross in subtraction so shouldn't there be a cross at rational numbers too?
Thank you for your comment! You are correct that natural numbers are a subset of rational numbers. The reason we put a cross through subtraction for rational numbers is because the subtraction of two rational numbers does not always result in a rational number. For example, if you subtract a natural number from a rational number, the result is not always a rational number.
@@MagnetBrainsEducation Thank you for clearing my doubt
@@MagnetBrainsEducation0:09
@@sairathod133😮😮😅
खर्थ मटकस
Sir is explaining better better than our maths teacher 😂😂😅❤❤❤
What is the time of your online class of 8 th standard sir
❤️😍❤️😍❤️😍 When you teach, Maths becomes so simple.
😊
No sir maths
Sir your jokes are so funny 😂 and I want to thank you and magnet brains for making so many great lectures for us to study ❤😊.
We're so happy to hear that you're enjoying the videos and that they're helping you out! Thank you for taking the time to write this comment and we'll keep putting out great content for you to enjoy and learn from!
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😂
Right bro!!
Who noticed that sir said closeup to closure property first
Mera 7th aacha gaya 8th toh bhagwan bharose 😂😂😂❤
Sir, ur concepts r crystal clear, thank u 🙏
Sir you are a legend please teach us in 9th also because you are the best compared to my teachers don’t even teach us they write on board and go
Additioe 0+0 Karenge to zero aaega natural number natural number closure properties me
Sir mai srk ka nahi appka fan hu 😊😊😊😊 bahot mast padhate hoo😊😊😊😊😊😊😊😊😊❤❤❤❤