SlideShare uma empresa Scribd logo
1 de 16
Baixar para ler offline
Whole Numbers
                Factors

 What will we learn today?
 • determining if a 1-digit number is a
   factor of a given number,
 • listing all factors of a given
   number up to 100,
 • finding the common factors
   of two given numbers
What are factors?
A factor is a smaller number that
divides exactly any larger number and
gives the remainder zero.

For example,

6 is not "exactly divisible" by 4 and 5.
So, 4 and 5 are not factors of 6.
How to find factors of a number?

 We will find all the factors of 12 by finding all
 the numbers that 12 can be exactly divided by.

   12 ÷ 1 = 12     12 ÷ 2 = 6      12 ÷ 3 = 4


    12 ÷ 4 = 3     12 ÷ 6 = 2     12 ÷ 12 = 1


  12 is exactly divisible by 1, 2, 3, 4, 6 and 12.
So 1, 2, 3, 4, 6 and 12 are the factors of 12.
Write all the factors for the numbers below
(the first one is done for you):

   4       1      2      4
   7       1      7
   9       1      3
   15      1                   15
Write all the factors for the numbers below
(the first one is done for you):

  4     1     2     4
  7     1     7     1x7=7
  9     1     3
  15    1                15
Write all the factors for the numbers below
(the first one is done for you):

  4     1     2     4
  7     1     7     1x7=7
  9     1     3    9    1x9=9,3x3=9
  15    1                15
Write all the factors for the numbers below
(the first one is done for you):

  4     1     2     4
  7     1     7     1x7=7
  9     1     3    9    1x9=9,3x3=9
  15    1     3    5     15    1 x 15 = 15
                               3 x 5 = 15
What are the factors of 20?
What are the factors of 20?

         1 x 20 = 20
         2 x 10 = 20
         4 x 5 = 20

 Step 1:
Write down the multiplication sentences of 20.
What are the factors of 20?

          1 x 20 = 20
          2 x 10 = 20
          4 x 5 = 20
Step 2:
       Do not write the factors twice.
                 4 x 5 = 5 x 4.
  You only need to write down 4 and 5 once.
What are the factors of 20?

          1 x 20 = 20
          2 x 10 = 20
          4 x 5 = 20

20 is exactly divisible by 1, 2, 4, 5, 10 and 20.
So 1, 2, 4, 5, 10 and 20 are the factors of 20.
What are the common factors
       of 40 and 72?
What are the common factors
        of 40 and 72?
1 x 40 = 40                1 x 72 = 72
2 x 20 = 40                2 x 36 = 72
4 x 10 = 40                3 x 24 = 72
                           4 x 18 = 72
5 x 8 = 40
                           6 x 12 = 72
                           8 x 9 = 72
  Step 1:
            List down all the factors.
What are the common factors
        of 40 and 72?
1 x 40 = 40           1 x 72 = 72
2 x 20 = 40           2 x 36 = 72
4 x 10 = 40           3 x 24 = 72
                      4 x 18 = 72
5 x 8 = 40
                      6 x 12 = 72
                      8 x 9 = 72
  Step 2:
    Circle the common number you see.
What are the common factors
        of 40 and 72?
1 x 40 = 40             1 x 72 = 72
2 x 20 = 40             2 x 36 = 72
4 x 10 = 40             3 x 24 = 72
                        4 x 18 = 72
5 x 8 = 40
                        6 x 12 = 72
                        8 x 9 = 72

    The common factors are 1, 2, 4 and 8.
Are you ready to
  try out the
   questions?

Mais conteúdo relacionado

Mais procurados

Factors and prime and composite numbers
Factors and prime and composite numbersFactors and prime and composite numbers
Factors and prime and composite numbers
judithgonzalez
 
Prime Factorization
Prime FactorizationPrime Factorization
Prime Factorization
mmeddin
 
Greatest Common Factor
Greatest Common FactorGreatest Common Factor
Greatest Common Factor
mmeddin
 
4-6 Estimating Products
4-6 Estimating Products4-6 Estimating Products
4-6 Estimating Products
Rudy Alfonso
 
Prime and composite numbers
Prime and composite numbersPrime and composite numbers
Prime and composite numbers
MOHAMED NAVEED
 
Congruen Polygons - Math 5
Congruen Polygons - Math 5Congruen Polygons - Math 5
Congruen Polygons - Math 5
Giovani Juan
 
Reducing fractions
Reducing fractionsReducing fractions
Reducing fractions
Chris James
 
Repeated addition (Multiplication)
Repeated addition (Multiplication)Repeated addition (Multiplication)
Repeated addition (Multiplication)
GhoshKajal
 

Mais procurados (20)

Multiplying and dividing fractions
Multiplying and dividing fractionsMultiplying and dividing fractions
Multiplying and dividing fractions
 
Factors and prime and composite numbers
Factors and prime and composite numbersFactors and prime and composite numbers
Factors and prime and composite numbers
 
Estimate Quotients
Estimate QuotientsEstimate Quotients
Estimate Quotients
 
Prime Factorization
Prime FactorizationPrime Factorization
Prime Factorization
 
ROUNDING OFF NUMBERS
ROUNDING OFF NUMBERSROUNDING OFF NUMBERS
ROUNDING OFF NUMBERS
 
Multiplication as Repeated Addition
Multiplication as Repeated AdditionMultiplication as Repeated Addition
Multiplication as Repeated Addition
 
Proper; Improper & Mixed Number Fractions
Proper; Improper & Mixed  Number FractionsProper; Improper & Mixed  Number Fractions
Proper; Improper & Mixed Number Fractions
 
Prime Factorization (Math 4)
Prime Factorization  (Math 4)Prime Factorization  (Math 4)
Prime Factorization (Math 4)
 
Properties of Multiplication
Properties of MultiplicationProperties of Multiplication
Properties of Multiplication
 
Greatest Common Factor
Greatest Common FactorGreatest Common Factor
Greatest Common Factor
 
Lesson 1.4 the set of integers
Lesson 1.4   the set of integersLesson 1.4   the set of integers
Lesson 1.4 the set of integers
 
4-6 Estimating Products
4-6 Estimating Products4-6 Estimating Products
4-6 Estimating Products
 
Add Mixed Numbers
Add Mixed NumbersAdd Mixed Numbers
Add Mixed Numbers
 
Math 6 - Understanding Integers
Math 6 - Understanding IntegersMath 6 - Understanding Integers
Math 6 - Understanding Integers
 
PROPERTIES OF MULTIPLICATION
PROPERTIES OF MULTIPLICATIONPROPERTIES OF MULTIPLICATION
PROPERTIES OF MULTIPLICATION
 
Prime and composite numbers
Prime and composite numbersPrime and composite numbers
Prime and composite numbers
 
Congruen Polygons - Math 5
Congruen Polygons - Math 5Congruen Polygons - Math 5
Congruen Polygons - Math 5
 
Reducing fractions
Reducing fractionsReducing fractions
Reducing fractions
 
Greatest Common Factor
Greatest Common FactorGreatest Common Factor
Greatest Common Factor
 
Repeated addition (Multiplication)
Repeated addition (Multiplication)Repeated addition (Multiplication)
Repeated addition (Multiplication)
 

Semelhante a Kungfu math p4 slide4 (factors)pdf

Factor & Multiples
Factor & MultiplesFactor & Multiples
Factor & Multiples
Nicholas Ee
 
Factorsprimessquare (1)
Factorsprimessquare (1)Factorsprimessquare (1)
Factorsprimessquare (1)
Sanjay Kumar
 
Factorsprimessquare
FactorsprimessquareFactorsprimessquare
Factorsprimessquare
Worserbay
 
Factors & multiples
Factors & multiplesFactors & multiples
Factors & multiples
Enoch Ng
 
Divisors factors and multiples
Divisors factors and multiplesDivisors factors and multiples
Divisors factors and multiples
sjdc777
 
Factors and Multiples P6.pptx Discussion, steps and short exercises
Factors and Multiples P6.pptx Discussion, steps and short exercisesFactors and Multiples P6.pptx Discussion, steps and short exercises
Factors and Multiples P6.pptx Discussion, steps and short exercises
MaribelCafe
 
Ns1.4 A Factors & Primes
Ns1.4 A Factors & PrimesNs1.4 A Factors & Primes
Ns1.4 A Factors & Primes
Mr. M
 
3a. multiplication, division
3a. multiplication, division3a. multiplication, division
3a. multiplication, division
Dominic Dewey
 
W2 - Lesson 3 Factors, Primes and Multiples .pptx
W2 - Lesson 3 Factors, Primes and Multiples .pptxW2 - Lesson 3 Factors, Primes and Multiples .pptx
W2 - Lesson 3 Factors, Primes and Multiples .pptx
ssusercf2e5c
 

Semelhante a Kungfu math p4 slide4 (factors)pdf (20)

Factor & Multiples
Factor & MultiplesFactor & Multiples
Factor & Multiples
 
Multiples and Factors
Multiples and FactorsMultiples and Factors
Multiples and Factors
 
8.3 factorisation lesson
8.3 factorisation lesson8.3 factorisation lesson
8.3 factorisation lesson
 
Factorsprimessquare (1)
Factorsprimessquare (1)Factorsprimessquare (1)
Factorsprimessquare (1)
 
Factorsprimessquare
FactorsprimessquareFactorsprimessquare
Factorsprimessquare
 
Factors & multiples
Factors & multiplesFactors & multiples
Factors & multiples
 
Common factor factorization
Common factor factorizationCommon factor factorization
Common factor factorization
 
Factors and multiples
Factors and multiplesFactors and multiples
Factors and multiples
 
Divisors factors and multiples
Divisors factors and multiplesDivisors factors and multiples
Divisors factors and multiples
 
What are Factors of 24 and How to Find Them.pdf
What are Factors of 24 and How to Find Them.pdfWhat are Factors of 24 and How to Find Them.pdf
What are Factors of 24 and How to Find Them.pdf
 
Factor ppt.
Factor ppt.Factor ppt.
Factor ppt.
 
Factors and Multiples P6.pptx Discussion, steps and short exercises
Factors and Multiples P6.pptx Discussion, steps and short exercisesFactors and Multiples P6.pptx Discussion, steps and short exercises
Factors and Multiples P6.pptx Discussion, steps and short exercises
 
Factors and Multiples.pptx
Factors and Multiples.pptxFactors and Multiples.pptx
Factors and Multiples.pptx
 
Ns1.4 A Factors & Primes
Ns1.4 A Factors & PrimesNs1.4 A Factors & Primes
Ns1.4 A Factors & Primes
 
209620644 introduction-to-factorization
209620644 introduction-to-factorization209620644 introduction-to-factorization
209620644 introduction-to-factorization
 
Revision grids-level-4
Revision grids-level-4Revision grids-level-4
Revision grids-level-4
 
3a. multiplication, division
3a. multiplication, division3a. multiplication, division
3a. multiplication, division
 
W2 - Lesson 3 Factors, Primes and Multiples .pptx
W2 - Lesson 3 Factors, Primes and Multiples .pptxW2 - Lesson 3 Factors, Primes and Multiples .pptx
W2 - Lesson 3 Factors, Primes and Multiples .pptx
 
Factors and multiples
Factors and multiplesFactors and multiples
Factors and multiples
 
Quicker maths
Quicker mathsQuicker maths
Quicker maths
 

Mais de kungfumath

Numbers to 100
Numbers to 100Numbers to 100
Numbers to 100
kungfumath
 
Multiplication
MultiplicationMultiplication
Multiplication
kungfumath
 
Addition within 100
Addition within 100Addition within 100
Addition within 100
kungfumath
 
Addition within 20
Addition within 20Addition within 20
Addition within 20
kungfumath
 
Ordinal numbers
Ordinal numbersOrdinal numbers
Ordinal numbers
kungfumath
 
Kungfu math p4 slide25 (tables)pdf
Kungfu math p4 slide25 (tables)pdfKungfu math p4 slide25 (tables)pdf
Kungfu math p4 slide25 (tables)pdf
kungfumath
 
Kungfu math p4 slide20 (lines)pdf
Kungfu math p4 slide20 (lines)pdfKungfu math p4 slide20 (lines)pdf
Kungfu math p4 slide20 (lines)pdf
kungfumath
 
Kungfu math p4 slide18 (money)pdf
Kungfu math p4 slide18 (money)pdfKungfu math p4 slide18 (money)pdf
Kungfu math p4 slide18 (money)pdf
kungfumath
 
Kungfu math p4 slide23 (symmetry)pdf
Kungfu math p4 slide23 (symmetry)pdfKungfu math p4 slide23 (symmetry)pdf
Kungfu math p4 slide23 (symmetry)pdf
kungfumath
 
Kungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdfKungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdf
kungfumath
 
Kungfu math p4 slide24 (tesellation)pdf
Kungfu math p4 slide24 (tesellation)pdfKungfu math p4 slide24 (tesellation)pdf
Kungfu math p4 slide24 (tesellation)pdf
kungfumath
 
Kungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdfKungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdf
kungfumath
 

Mais de kungfumath (20)

Time
TimeTime
Time
 
Money
MoneyMoney
Money
 
Mass
MassMass
Mass
 
Length
LengthLength
Length
 
Numbers to 100
Numbers to 100Numbers to 100
Numbers to 100
 
Numbers to 40
Numbers to 40Numbers to 40
Numbers to 40
 
Numbers to 20
Numbers to 20Numbers to 20
Numbers to 20
 
Multiplication
MultiplicationMultiplication
Multiplication
 
Division
DivisionDivision
Division
 
Addition within 100
Addition within 100Addition within 100
Addition within 100
 
Addition within 20
Addition within 20Addition within 20
Addition within 20
 
Ordinal numbers
Ordinal numbersOrdinal numbers
Ordinal numbers
 
Numbers to 20
Numbers to 20Numbers to 20
Numbers to 20
 
Kungfu math p4 slide25 (tables)pdf
Kungfu math p4 slide25 (tables)pdfKungfu math p4 slide25 (tables)pdf
Kungfu math p4 slide25 (tables)pdf
 
Kungfu math p4 slide20 (lines)pdf
Kungfu math p4 slide20 (lines)pdfKungfu math p4 slide20 (lines)pdf
Kungfu math p4 slide20 (lines)pdf
 
Kungfu math p4 slide18 (money)pdf
Kungfu math p4 slide18 (money)pdfKungfu math p4 slide18 (money)pdf
Kungfu math p4 slide18 (money)pdf
 
Kungfu math p4 slide23 (symmetry)pdf
Kungfu math p4 slide23 (symmetry)pdfKungfu math p4 slide23 (symmetry)pdf
Kungfu math p4 slide23 (symmetry)pdf
 
Kungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdfKungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdf
 
Kungfu math p4 slide24 (tesellation)pdf
Kungfu math p4 slide24 (tesellation)pdfKungfu math p4 slide24 (tesellation)pdf
Kungfu math p4 slide24 (tesellation)pdf
 
Kungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdfKungfu math p4 slide17 (time)pdf
Kungfu math p4 slide17 (time)pdf
 

Kungfu math p4 slide4 (factors)pdf

  • 1. Whole Numbers Factors What will we learn today? • determining if a 1-digit number is a factor of a given number, • listing all factors of a given number up to 100, • finding the common factors of two given numbers
  • 2. What are factors? A factor is a smaller number that divides exactly any larger number and gives the remainder zero. For example, 6 is not "exactly divisible" by 4 and 5. So, 4 and 5 are not factors of 6.
  • 3. How to find factors of a number? We will find all the factors of 12 by finding all the numbers that 12 can be exactly divided by. 12 ÷ 1 = 12 12 ÷ 2 = 6 12 ÷ 3 = 4 12 ÷ 4 = 3 12 ÷ 6 = 2 12 ÷ 12 = 1 12 is exactly divisible by 1, 2, 3, 4, 6 and 12. So 1, 2, 3, 4, 6 and 12 are the factors of 12.
  • 4. Write all the factors for the numbers below (the first one is done for you): 4 1 2 4 7 1 7 9 1 3 15 1 15
  • 5. Write all the factors for the numbers below (the first one is done for you): 4 1 2 4 7 1 7 1x7=7 9 1 3 15 1 15
  • 6. Write all the factors for the numbers below (the first one is done for you): 4 1 2 4 7 1 7 1x7=7 9 1 3 9 1x9=9,3x3=9 15 1 15
  • 7. Write all the factors for the numbers below (the first one is done for you): 4 1 2 4 7 1 7 1x7=7 9 1 3 9 1x9=9,3x3=9 15 1 3 5 15 1 x 15 = 15 3 x 5 = 15
  • 8. What are the factors of 20?
  • 9. What are the factors of 20? 1 x 20 = 20 2 x 10 = 20 4 x 5 = 20 Step 1: Write down the multiplication sentences of 20.
  • 10. What are the factors of 20? 1 x 20 = 20 2 x 10 = 20 4 x 5 = 20 Step 2: Do not write the factors twice. 4 x 5 = 5 x 4. You only need to write down 4 and 5 once.
  • 11. What are the factors of 20? 1 x 20 = 20 2 x 10 = 20 4 x 5 = 20 20 is exactly divisible by 1, 2, 4, 5, 10 and 20. So 1, 2, 4, 5, 10 and 20 are the factors of 20.
  • 12. What are the common factors of 40 and 72?
  • 13. What are the common factors of 40 and 72? 1 x 40 = 40 1 x 72 = 72 2 x 20 = 40 2 x 36 = 72 4 x 10 = 40 3 x 24 = 72 4 x 18 = 72 5 x 8 = 40 6 x 12 = 72 8 x 9 = 72 Step 1: List down all the factors.
  • 14. What are the common factors of 40 and 72? 1 x 40 = 40 1 x 72 = 72 2 x 20 = 40 2 x 36 = 72 4 x 10 = 40 3 x 24 = 72 4 x 18 = 72 5 x 8 = 40 6 x 12 = 72 8 x 9 = 72 Step 2: Circle the common number you see.
  • 15. What are the common factors of 40 and 72? 1 x 40 = 40 1 x 72 = 72 2 x 20 = 40 2 x 36 = 72 4 x 10 = 40 3 x 24 = 72 4 x 18 = 72 5 x 8 = 40 6 x 12 = 72 8 x 9 = 72 The common factors are 1, 2, 4 and 8.
  • 16. Are you ready to try out the questions?