9.1. Real Numbers Videos

1

Introduction of number system, 

 Natural numbers

https://youtu.be/kVlMthaeD18

2

Whole Numbers

https://youtu.be/Br4asTc-qeI

3

Integers

https://youtu.be/DZ6cAXmMaR8

4

Fraction

https://youtu.be/oZg6vX8S3KM

5

Rational Numbers

https://youtu.be/hO3stRn2_wI

6

Irrational Numbers

https://youtu.be/0PAhf2n01TU

7

Real numbers

https://youtu.be/FHdwldqmGSk

8

Represent 5/3 and -5/3 on number line

https://youtu.be/DLJ4lfVo8_c

9

Write Rational Number Between any two rational Numbers

“Find two rational numbers between 3 and 4 by mean method.”

“Write  eight rational numbers between”   5/12   and   7/12

https://youtu.be/WCj8y7jh9Ys

10

Decimal Representation of Rational Numbers

https://youtu.be/xW4P1w0azy8

11

“Express the given terminating decimalsor recurring  in”

the form”  ”   p/q   “where p and q are ” integers and q ≠0.

https://youtu.be/u4CTYBxK0pM

12

Find square root   by the  division method

1089;   67081 ; 100861849 ; 90.25 ,12544; 234.7024

https://youtu.be/zhiLjR4UNcc

13

How to Find Square Root of 2 up to 3 decimals

https://youtu.be/u4UuFuZhKwY

14

15

How to Find Square Root of 5 up to 3 decimals

https://youtu.be/GMx9WyOoIgk

16

How to Find Square Root of 10 up to 3 decimals

https://youtu.be/3St9pPlGsjE

17

Construction Square Root Spiral Class IX

https://youtu.be/wN2iP2IsLXA

18

represent √2, √3 , √5 on number line

https://youtu.be/tUTngAfp4EM

19

Visualise 3.5888 on the Number Line Successive Magnification Method

https://youtu.be/kH2OP9sK4KI

20

Surds and Types of Surds

https://youtu.be/T7CQxrKpcQk

https://youtu.be/cENAKOcy_NY

21

convert  Pure surd into mixed surd

https://youtu.be/Ei8LxZa_DCY

22

Identities of Radicals

https://youtu.be/FKfaUys1fZE

23

Write Irrational Numbers between 2 and 3

https://youtu.be/kOWQ5Id8zdo

24

“Rationalising the Denominator”

1/√2   ,     1/( √27);         2/(3√5)  ,  1/(4+ √5);1/(7+4√3)+1/(2+ √5)

https://youtu.be/d06tRjJX2-M

25

Fundamental Operation on surds

addition  subtraction, multiplication, division

Extra syllabus (order is different how to multiply and divide)

https://youtu.be/8vbkfMIlXw4

26

if x=7+4√3   then find x+  1/x

https://youtu.be/B6IusZbux78

27

If a and  b are rational numbers . Find a and b values

(5+2√3)/(7+4√3) “=” a+b√3

https://youtu.be/_AU96i4-daA

28

Simplify  4√12-√50-7√48   ;

Simplify     4√3–3√12+2√75

simplify 5 √3  +2√27+1/√3

https://youtu.be/dpDHBCozPX4

29

Find the square  root of 5+2√6

https://youtu.be/iva1WB4f4eU