Math Ch-5 Factors and Multiples

 13/08/20

Topic Taught: Kick Start

Revising the concepts of Factors and multiples(studied in previous grade).

Refer the PPT resource:



Factors



Homework: Please revise the concept taught today in the class.


14/08/20

Topic Taught: Screening test of Factors and Multiples.

Exercise 5.1 Q1- a,b,c



Note: the following answers are also correct for 4- infinite / unlimited / uncountable.



Homework: Complete K in the KWL chart.

Complete Ex 5.1 Q1 - d,e.


17/08/20 (VB)

Topic Taught: Common factors, multiples and common multiples.

Classwork: Exercise 5.1 Q2 a,b , Q4 a,b,c , Q5 a,b, Q6 (in Tb)







 

Homework: Exercise 5.1 Q2 c, Q3(in TB), Q4 d,e Q5 c,d


18/08/20 (VA)

Topic Taught: Common factors, multiples and common multiples.

Classwork: Exercise 5.1 Q2 a,b , Q4 a,b,c  Q6 (in Tb)


Add caption







 

Homework: Exercise 5.1 Q2 c, Q3(in TB), Q4 d,e 


18/08/20 (VB)

Topic Taught: Divisibility Rules 

Watch video V_CBSE_Math_Factors and Multiplies_Divisibility Rules to understand divisibility rules. 

Points Discussed in the class

  • A divisibility rule determines whether a given number is divisible by a fixed divisor without performing the division, usually by examining its digits.
  • Divisibility by 2: When the digit in the ones place of a number is 0, 2, 4, 6 or 8, then that number is divisible by 2.
  • Divisibility by 3: If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.
  • Divisibility by 5: When the digit in the ones place of a number is 0 or 5, then that number is divisible by 5.
  • Divisibility by 6: If a number is divisible by both 2 and 3, then the number is divisible by 6. 
  • Divisibility by 9: If the sum of the digits of a number is divisible by 9, then the number is divisible by 9.
  • Divisibility by 10: When the digit in the ones place of a number is 0, then that number is divisible by 10.
Homework: Please revise all the divisibility rules.

19/08/20 (V A)

Topic Taught: Exercise 5.1 Q5- a,b.

Divisibility Rules 

Watch video V_CBSE_Math_Factors and Multiplies_Divisibility Rules to understand divisibility rules. 


Classwork: 

Points Discussed in the class

  • A divisibility rule determines whether a given number is divisible by a fixed divisor without performing the division, usually by examining its digits.
  • Divisibility by 2: When the digit in the ones place of a number is 0, 2, 4, 6 or 8, then that number is divisible by 2.
  • Divisibility by 3: If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.
  • Divisibility by 5: When the digit in the ones place of a number is 0 or 5, then that number is divisible by 5.
  • Divisibility by 6: If a number is divisible by both 2 and 3, then the number is divisible by 6. 

Homework: Complete Exercise 5.1 Q5- c,d and Please revise all the divisibility rules.


20/08/20 (VA, VB)

Topic Taught: Revised all the divisibility rules and discussion of Exercise 5.2 Q1 a to f


Homework: Exercise 5.2 Q1 g to k (in TB only)

21/08/20 ( VA and VB)

Topic Taught: Exercise 5.2 Q 2,3
Explaination of Prime Factorisation.



24/08/20 (VB)

Topic Taught: long division method for prime factorisation.

Classwork: Ex 5.4 Q2 -a to f 







Homework: Exercise 5.4 Q2 g and h.


25/08/20 (VA)

Topic Taught: long division method for prime factorisation.

Classwork: Ex 5.4 Q2 -a to f 








Homework: Exercise 5.4 Q2 g and h.

25/08/20 (VB)

Topic Taught: HCF- Listing method, Prime Factorization.

1. Click on video link 2 to watch given video to understand the concept of Highest Common Factor.

Classwork:








Homework: Exercise 5.5 Q1 a,b,d

26/08/20 (VA)

Topic Taught: HCF- Listing method, Prime Factorization.

1. Click on video link 2 to watch given video to understand the concept of Highest Common Factor.

Classwork: Homework: Exercise 5.5 Q1 c,e,f  Q2 a,b







Homework: Exercise 5.5 Q1 a,b,d

27/08/20 (VA and VB)

Topic Taught: Finding HCF using Prime factorization and Long division method.

Classwork: Exercise 5.5 Q2- c to g and Q3- a









Homework: Exercise 5.5 Q2 -h,i and j

28/08/20 (VA and VB)

Topic Taught: Finding HCF using Long division method.

Classwork: Exercise 5.5 Q3- b,c,d,e,f









Homework: Exercise 5.5 Q3 -g and h. 

31/08/20 (VB)

Topic Taught: Least Common Multiple - Using Listing method and Using Prime Factorisation.

Click on the video link 3 and link 4 to understand and learn the steps to find out the Least Common
Multiple (LCM) using listing method and prime factorisation method.

Classwork:







Homework: Exercise 5.6 Q1 b,d and f.

01/09/20 (VA)

Topic Taught: Least Common Multiple - Using Listing method and Using Prime Factorisation.

Click on the video link 3 and link 4 to understand and learn the steps to find out the Least Common
Multiple (LCM) using listing method and prime factorisation method.

Classwork:











Homework: Exercise 5.6 Q1- b,d,f

01/09/20(VB)

Topic Taught: Least Common Multiple -Using Prime Factorisation and Using Long Division Method.

Click on the video link 5 to understand the LCM using common division method.





Homework: Exercise 5.6 Q2 e and Q3 d,e.

02/09/20(VA)

Topic Taught: Least Common Multiple -Using Prime Factorisation and Using Long Division Method.

Click on the video link 5 to understand the LCM using common division method.

Classwork:









Homework: Exercise 5.6 Q2 e and Q3 e,f.

03/09/20 (VA)

Topic Taught: Exercise 5.6 Q3 e,f workbook discussion upto QIV -3 



Homework : Workbook QV 

03/09/20 (VB)

Topic Taught: Exercise 5.6 Q3 d,e,f

Workbook discussion upto  QIV- 5




Homework: Workbook QV 

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