SlideShare a Scribd company logo
1 of 28
Project :- Basic Mathematics
To:- Ms. Kavita Gokhale
From :-
Name                           Roll no .
Manish tripathi                   37
Suhas vanve                       38
Akash varaiya                     39
Chirag vasani                     40
Vijitha das                       41
Dipesh waghe                      42
FOUR QUARTERS


-+=-   --=+


++=+   +-=-
Sign rules
   Adding Sign rules


            Positive + Positive = Positive
            eg: 5 + 4 = 9
            Negative + Negative = Negative
            eg: (- 7) + (- 2) = - 9

            Sum of a negative and a positive number:
            Use the sign of the larger number and
            subtract
                                       eg: (- 7) + 4 = -3
                                          6 + (-9) = - 3
                                          (- 3) + 7 = 4
                                           5 + ( -3) = 2
 Subtracting Rules:


 Negative - Positive = Negative
 eg: (- 5) - 3 = -5 + (-3) = -8
 Positive - Negative = Positive + Positive =
 Positive
 eg: 5 - (-3) = 5 + 3 = 8
 Negative - Negative = Negative + Positive = Use
 the sign of the larger number and
 subtract (Change double negatives to a
 positive)
                          eg:(-5) - (-3) = ( -5) + 3 = -2
                             (-3) - ( -5) = (-3) + 5 = 2
Integers Numbers


Positive Numbers

    • +1, +2, +3,+4. every number which is
      greater than 1 is called positive
      numbers.
Negative Number

• -1, -2, -3, -4 every number which
  is less than 1 is called negative
  numbers
Writing integers
Example            Written as      Read as

1) (+55) + (-30)   55+ (-30)       Fifty –five plus
                                   negative thirty
2) (+49) + (+14)   49+(14)         Forty-nine plus
                   Or 49+14        fourteen
3)(-27) + (-127)   (-27) +(-127)   Negative
                                   twenty-seven
                                   plus negative
                                   hundred and
                                   twenty-seven
Multiplication and division of
             integers
• Ex. (1) (-14) X (-5)
The magnitudes of -14 and -5 are 14 and 5
   respectively
Their product, 14X5 = 70
(-14) X(-5)=70
The product of two negative numbers is
   positive.
Carry out the following
       multiplications:
•   12X(-3)
•   (-6) X4
•   (-15)X(-5)
•    35X8
•   (-38)X(-2)
•   15X(-61)
Carry out the following Divisions:
    •   (-15) / (-5)
    •   (-38/ (-2)
    •   90/6
    •   (-90)/(-6)
PerCENTAGE
 You may have come across with news items like
        the Newspaper , Radio or T.V.
 We use the word percent often in everyday affairs
For ex.
1)There has been 15per increase in food grain
    production.
   2)The cost of petrol has rises by 5percent.
 Let us find out the meaning of these words and
    learn how they are used.
Definition
• Percent can be defined as
 “of one hundred.”

             of

         100
Definition
• “Cent” comes from the Latin
   and means 100.
Convert percent to number : multiply by 100

1. 25%= 25 = 1
        100  4
Comparing Money &
         Percents
• RS 0.50 is ½ of a rupee
• 50% also means ½
20 % Means
20 parts out of 100 or 20 hundredths.
       1    2    3    4     5   6    7    8    9    10
       11   12   13   14   15   16   17   18   19   20
       21   22   23   24   25   26   27   28   29   30
       31   32   33   34   35   36   37   38   39   40
       41   42   43   44   45   46   47   48   49   50
       51   52   53   54   55   56   57   58   59   60
       61   62   63   64   65   66   67   68   69   70
       71   72   73   74   75   76   77   78   79   80
       81   82   83   84   85   86   87   88   89   90
       91   92   93   94   95   96   97   98   99   100
•   Given:
•   Cost price=Rs 60
•   discount=25%
•   Amount of discount  =25% of (60)
                        = 25 x 60
                          100
                    Ans =15.Rs
                    Price After Discount:-
                    =Cost price –discount amount
                    =60 – 15
                    =Rs 45.Rs
                    Total cost of shoes is 45 Rs.
• Given:
• cost price= Rs 30
• Tax=7%

• Amount of tax=7% of (30)
                  = 7 x 30
                   100
              Ans =2.10 Rs.
Price after discount=cost price-discount amt
                    =30 + 2.10
                Ans=32.10 Rs.
      Total cost of shirt is 32.10 Rs.
DECIMAL FRACTION INTO
            PERCENTAGE
 Convert the following decimal fraction into percentage.
 Examples :-
      1) 0.52    = 52/100       = 52%

      2) 0.060 = 6/100          = 6%

      3) 0.4     = 0.40 = 40/100 = 40%

      4) 1.0     = 1.00 = 100/100 = 100%
PERCENTAGE OF A GIVEN
             NUMBER
Convert the following fraction into percentage.
Find out a given percentage of a given numbers.
Example :-
1)50% of 70 means      70x50/100 = 35

2)3% of 25000 mean 25000x3/100 = 750
3) There are 40 percent girls in a certain school . If the
number of children in the school is 950, what is the number of
girls in the school.
     40% of 950 = 950x40/100 = 380
                         Ans - Number of girls is 380
FIND PERCENTAGE
Find out what percentage of a given number forms of
another number.
24,50
      24/50=
 24x2/50x2 = 48/100 = 48%

2) 222 , 300
        222/300   = 222÷3/300÷3 = 74/100 = 74%
E.g. :
= 25 x [ 113 – 9 + 2 x 13 ]
= 25 x [ 113 – 9 + 26 ]
= 25 x [ 104 + 26 ]
= 25 x 130
= 3250


  Solve the following ?

  1. (130 + 91) x ( 2 + 8 ) = ?   Ans. 2210

  2. 103 + 91 x 2 + 8 = ?         Ans. 293
The End

Bibliography : Mathematics Text book
             (Standard Six )

www.wikipedia.co.in

www.slideshare.com

http://cgl.microsoft.com/
clipgallerylive/default.asp
Basic math akash

More Related Content

What's hot

Fractions to percents
Fractions to percentsFractions to percents
Fractions to percents
khyps13
 
9.2 rational and irrational numbers day 1
9.2 rational and irrational numbers day 19.2 rational and irrational numbers day 1
9.2 rational and irrational numbers day 1
bweldon
 
Sales tax and tip powerpoint
Sales tax and tip  powerpointSales tax and tip  powerpoint
Sales tax and tip powerpoint
tigergirl823
 
Fractions decimals-and-percents
Fractions decimals-and-percentsFractions decimals-and-percents
Fractions decimals-and-percents
tvierra
 
Linear Equations Ppt
Linear Equations PptLinear Equations Ppt
Linear Equations Ppt
Scott R
 

What's hot (20)

Ratios And Rates
Ratios And RatesRatios And Rates
Ratios And Rates
 
Fractions to percents
Fractions to percentsFractions to percents
Fractions to percents
 
DIVIDING WITH ZEROS
DIVIDING WITH ZEROSDIVIDING WITH ZEROS
DIVIDING WITH ZEROS
 
9.2 rational and irrational numbers day 1
9.2 rational and irrational numbers day 19.2 rational and irrational numbers day 1
9.2 rational and irrational numbers day 1
 
Calculate percentage change
Calculate percentage changeCalculate percentage change
Calculate percentage change
 
Sharing Using Ratios
Sharing Using RatiosSharing Using Ratios
Sharing Using Ratios
 
Sales tax and tip powerpoint
Sales tax and tip  powerpointSales tax and tip  powerpoint
Sales tax and tip powerpoint
 
Place value
Place valuePlace value
Place value
 
Square roots
Square rootsSquare roots
Square roots
 
Square Roots And Perfect Squares
Square Roots And Perfect SquaresSquare Roots And Perfect Squares
Square Roots And Perfect Squares
 
Divisibility rules
Divisibility rulesDivisibility rules
Divisibility rules
 
Solving 2 step equations
Solving 2 step equationsSolving 2 step equations
Solving 2 step equations
 
Ratio
RatioRatio
Ratio
 
Fractions decimals-and-percents
Fractions decimals-and-percentsFractions decimals-and-percents
Fractions decimals-and-percents
 
Complementary Probability
Complementary ProbabilityComplementary Probability
Complementary Probability
 
Converting fractions, decimals, and percents
Converting fractions, decimals, and percentsConverting fractions, decimals, and percents
Converting fractions, decimals, and percents
 
Percentages
PercentagesPercentages
Percentages
 
Oprations Of Decimal Numbers
Oprations Of Decimal NumbersOprations Of Decimal Numbers
Oprations Of Decimal Numbers
 
Prime Factorization
Prime FactorizationPrime Factorization
Prime Factorization
 
Linear Equations Ppt
Linear Equations PptLinear Equations Ppt
Linear Equations Ppt
 

Viewers also liked

Sum Of The Angles Of A Triangle
Sum Of The Angles Of A TriangleSum Of The Angles Of A Triangle
Sum Of The Angles Of A Triangle
corinnegallagher
 
Basics mathematical modeling
Basics mathematical modelingBasics mathematical modeling
Basics mathematical modeling
cyndy
 
Basic Mathematics 3 5 Presentation
Basic Mathematics   3 5 PresentationBasic Mathematics   3 5 Presentation
Basic Mathematics 3 5 Presentation
David Radcliffe
 
Notes and formulae mathematics
Notes and formulae mathematicsNotes and formulae mathematics
Notes and formulae mathematics
Zainonie Ma'arof
 

Viewers also liked (13)

Physics Alphabet
Physics   AlphabetPhysics   Alphabet
Physics Alphabet
 
Sum Of The Angles Of A Triangle
Sum Of The Angles Of A TriangleSum Of The Angles Of A Triangle
Sum Of The Angles Of A Triangle
 
Basics mathematical modeling
Basics mathematical modelingBasics mathematical modeling
Basics mathematical modeling
 
Angles and triangles in hindi
Angles and triangles in hindiAngles and triangles in hindi
Angles and triangles in hindi
 
Maths Top 50 Formulas
Maths Top 50 FormulasMaths Top 50 Formulas
Maths Top 50 Formulas
 
Ses 1 basic fundamentals of mathematics and statistics
Ses 1 basic fundamentals of mathematics and statisticsSes 1 basic fundamentals of mathematics and statistics
Ses 1 basic fundamentals of mathematics and statistics
 
Basic operations in Mathematics
Basic operations in MathematicsBasic operations in Mathematics
Basic operations in Mathematics
 
Basic Mathematics 3 5 Presentation
Basic Mathematics   3 5 PresentationBasic Mathematics   3 5 Presentation
Basic Mathematics 3 5 Presentation
 
Notes and formulae mathematics
Notes and formulae mathematicsNotes and formulae mathematics
Notes and formulae mathematics
 
Mathematics Basic Formulae
Mathematics Basic FormulaeMathematics Basic Formulae
Mathematics Basic Formulae
 
Basics Physics of ultrasound
Basics Physics of ultrasoundBasics Physics of ultrasound
Basics Physics of ultrasound
 
CT ITS BASIC PHYSICS
CT ITS BASIC PHYSICSCT ITS BASIC PHYSICS
CT ITS BASIC PHYSICS
 
Formula book
Formula bookFormula book
Formula book
 

Similar to Basic math akash

Foundation revision notes
Foundation revision notesFoundation revision notes
Foundation revision notes
keshmaths
 
Sept. 20
Sept. 20Sept. 20
Sept. 20
khyps13
 
Integers, roots, powers, order of operations
Integers, roots, powers, order of operationsIntegers, roots, powers, order of operations
Integers, roots, powers, order of operations
mathn3rd
 
Key stage 3_mathematics_level_6_revision_
Key stage 3_mathematics_level_6_revision_Key stage 3_mathematics_level_6_revision_
Key stage 3_mathematics_level_6_revision_
harlie90
 
Power point (Tugasan Teknologi Pendidikan)
Power point (Tugasan Teknologi Pendidikan)Power point (Tugasan Teknologi Pendidikan)
Power point (Tugasan Teknologi Pendidikan)
Normira Ibrahim
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematics
Dr. Trilok Kumar Jain
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematics
Dr. Trilok Kumar Jain
 
H O W T O A N A L Y S E A B U S I N E S S C A S E
H O W  T O  A N A L Y S E  A  B U S I N E S S  C A S EH O W  T O  A N A L Y S E  A  B U S I N E S S  C A S E
H O W T O A N A L Y S E A B U S I N E S S C A S E
Dr. Trilok Kumar Jain
 
Business Mathematics And Quantitative Aptitude
Business Mathematics And Quantitative AptitudeBusiness Mathematics And Quantitative Aptitude
Business Mathematics And Quantitative Aptitude
Dr. Trilok Kumar Jain
 
B A S I C S T A T I S T I C S F O R N O N C O M M E R C E S T U D E N T S
B A S I C  S T A T I S T I C S  F O R  N O N  C O M M E R C E  S T U D E N T SB A S I C  S T A T I S T I C S  F O R  N O N  C O M M E R C E  S T U D E N T S
B A S I C S T A T I S T I C S F O R N O N C O M M E R C E S T U D E N T S
Dr. Trilok Kumar Jain
 

Similar to Basic math akash (20)

Integers_Intro.ppt
Integers_Intro.pptIntegers_Intro.ppt
Integers_Intro.ppt
 
Chapter 2
Chapter 2Chapter 2
Chapter 2
 
1 arithmetic shortcuts
1 arithmetic shortcuts1 arithmetic shortcuts
1 arithmetic shortcuts
 
Add / Sub
Add / SubAdd / Sub
Add / Sub
 
Foundation revision notes
Foundation revision notesFoundation revision notes
Foundation revision notes
 
Bilangan Bulat Matematika Kelas 7
Bilangan Bulat Matematika Kelas 7Bilangan Bulat Matematika Kelas 7
Bilangan Bulat Matematika Kelas 7
 
Sept. 20
Sept. 20Sept. 20
Sept. 20
 
Números Reales - Genesis Sira
Números Reales - Genesis SiraNúmeros Reales - Genesis Sira
Números Reales - Genesis Sira
 
Integers, roots, powers, order of operations
Integers, roots, powers, order of operationsIntegers, roots, powers, order of operations
Integers, roots, powers, order of operations
 
Key stage 3_mathematics_level_6_revision_
Key stage 3_mathematics_level_6_revision_Key stage 3_mathematics_level_6_revision_
Key stage 3_mathematics_level_6_revision_
 
Power point (Tugasan Teknologi Pendidikan)
Power point (Tugasan Teknologi Pendidikan)Power point (Tugasan Teknologi Pendidikan)
Power point (Tugasan Teknologi Pendidikan)
 
Number System.pptx
Number System.pptxNumber System.pptx
Number System.pptx
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematics
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematics
 
order of operations
order of operationsorder of operations
order of operations
 
H O W T O A N A L Y S E A B U S I N E S S C A S E
H O W  T O  A N A L Y S E  A  B U S I N E S S  C A S EH O W  T O  A N A L Y S E  A  B U S I N E S S  C A S E
H O W T O A N A L Y S E A B U S I N E S S C A S E
 
Business Mathematics And Quantitative Aptitude
Business Mathematics And Quantitative AptitudeBusiness Mathematics And Quantitative Aptitude
Business Mathematics And Quantitative Aptitude
 
B A S I C S T A T I S T I C S F O R N O N C O M M E R C E S T U D E N T S
B A S I C  S T A T I S T I C S  F O R  N O N  C O M M E R C E  S T U D E N T SB A S I C  S T A T I S T I C S  F O R  N O N  C O M M E R C E  S T U D E N T S
B A S I C S T A T I S T I C S F O R N O N C O M M E R C E S T U D E N T S
 
Numbers standard level
Numbers standard levelNumbers standard level
Numbers standard level
 
Maths T5 W1
Maths T5 W1Maths T5 W1
Maths T5 W1
 

More from Akash Varaiya (15)

Eco friendly product
Eco friendly productEco friendly product
Eco friendly product
 
The indiantobaccocontrolact a-publichealthimperative
The indiantobaccocontrolact a-publichealthimperativeThe indiantobaccocontrolact a-publichealthimperative
The indiantobaccocontrolact a-publichealthimperative
 
Indian goverment blocking websites
Indian goverment  blocking websitesIndian goverment  blocking websites
Indian goverment blocking websites
 
E setu
E setuE setu
E setu
 
Introduction to computers
Introduction to computersIntroduction to computers
Introduction to computers
 
Power point 2007
Power point 2007Power point 2007
Power point 2007
 
Microsoft word
Microsoft wordMicrosoft word
Microsoft word
 
Microsoft excel
Microsoft excelMicrosoft excel
Microsoft excel
 
Information technology act 2000
Information technology act 2000Information technology act 2000
Information technology act 2000
 
HTML
HTMLHTML
HTML
 
Fy bms- I SEM it ppt
Fy bms- I SEM it pptFy bms- I SEM it ppt
Fy bms- I SEM it ppt
 
Bodmas
BodmasBodmas
Bodmas
 
Programming languages
Programming languagesProgramming languages
Programming languages
 
Networking
NetworkingNetworking
Networking
 
Walt disney
Walt disneyWalt disney
Walt disney
 

Recently uploaded

MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...
MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...
MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...
Krashi Coaching
 

Recently uploaded (20)

Đề tieng anh thpt 2024 danh cho cac ban hoc sinh
Đề tieng anh thpt 2024 danh cho cac ban hoc sinhĐề tieng anh thpt 2024 danh cho cac ban hoc sinh
Đề tieng anh thpt 2024 danh cho cac ban hoc sinh
 
Andreas Schleicher presents at the launch of What does child empowerment mean...
Andreas Schleicher presents at the launch of What does child empowerment mean...Andreas Schleicher presents at the launch of What does child empowerment mean...
Andreas Schleicher presents at the launch of What does child empowerment mean...
 
The Liver & Gallbladder (Anatomy & Physiology).pptx
The Liver &  Gallbladder (Anatomy & Physiology).pptxThe Liver &  Gallbladder (Anatomy & Physiology).pptx
The Liver & Gallbladder (Anatomy & Physiology).pptx
 
The Ball Poem- John Berryman_20240518_001617_0000.pptx
The Ball Poem- John Berryman_20240518_001617_0000.pptxThe Ball Poem- John Berryman_20240518_001617_0000.pptx
The Ball Poem- John Berryman_20240518_001617_0000.pptx
 
How to Manage Closest Location in Odoo 17 Inventory
How to Manage Closest Location in Odoo 17 InventoryHow to Manage Closest Location in Odoo 17 Inventory
How to Manage Closest Location in Odoo 17 Inventory
 
MOOD STABLIZERS DRUGS.pptx
MOOD     STABLIZERS           DRUGS.pptxMOOD     STABLIZERS           DRUGS.pptx
MOOD STABLIZERS DRUGS.pptx
 
BỘ LUYỆN NGHE TIẾNG ANH 8 GLOBAL SUCCESS CẢ NĂM (GỒM 12 UNITS, MỖI UNIT GỒM 3...
BỘ LUYỆN NGHE TIẾNG ANH 8 GLOBAL SUCCESS CẢ NĂM (GỒM 12 UNITS, MỖI UNIT GỒM 3...BỘ LUYỆN NGHE TIẾNG ANH 8 GLOBAL SUCCESS CẢ NĂM (GỒM 12 UNITS, MỖI UNIT GỒM 3...
BỘ LUYỆN NGHE TIẾNG ANH 8 GLOBAL SUCCESS CẢ NĂM (GỒM 12 UNITS, MỖI UNIT GỒM 3...
 
MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...
MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...
MSc Ag Genetics & Plant Breeding: Insights from Previous Year JNKVV Entrance ...
 
ANTI PARKISON DRUGS.pptx
ANTI         PARKISON          DRUGS.pptxANTI         PARKISON          DRUGS.pptx
ANTI PARKISON DRUGS.pptx
 
Sternal Fractures & Dislocations - EMGuidewire Radiology Reading Room
Sternal Fractures & Dislocations - EMGuidewire Radiology Reading RoomSternal Fractures & Dislocations - EMGuidewire Radiology Reading Room
Sternal Fractures & Dislocations - EMGuidewire Radiology Reading Room
 
Word Stress rules esl .pptx
Word Stress rules esl               .pptxWord Stress rules esl               .pptx
Word Stress rules esl .pptx
 
An Overview of the Odoo 17 Knowledge App
An Overview of the Odoo 17 Knowledge AppAn Overview of the Odoo 17 Knowledge App
An Overview of the Odoo 17 Knowledge App
 
PSYPACT- Practicing Over State Lines May 2024.pptx
PSYPACT- Practicing Over State Lines May 2024.pptxPSYPACT- Practicing Over State Lines May 2024.pptx
PSYPACT- Practicing Over State Lines May 2024.pptx
 
IPL Online Quiz by Pragya; Question Set.
IPL Online Quiz by Pragya; Question Set.IPL Online Quiz by Pragya; Question Set.
IPL Online Quiz by Pragya; Question Set.
 
TỔNG HỢP HƠN 100 ĐỀ THI THỬ TỐT NGHIỆP THPT VẬT LÝ 2024 - TỪ CÁC TRƯỜNG, TRƯ...
TỔNG HỢP HƠN 100 ĐỀ THI THỬ TỐT NGHIỆP THPT VẬT LÝ 2024 - TỪ CÁC TRƯỜNG, TRƯ...TỔNG HỢP HƠN 100 ĐỀ THI THỬ TỐT NGHIỆP THPT VẬT LÝ 2024 - TỪ CÁC TRƯỜNG, TRƯ...
TỔNG HỢP HƠN 100 ĐỀ THI THỬ TỐT NGHIỆP THPT VẬT LÝ 2024 - TỪ CÁC TRƯỜNG, TRƯ...
 
Including Mental Health Support in Project Delivery, 14 May.pdf
Including Mental Health Support in Project Delivery, 14 May.pdfIncluding Mental Health Support in Project Delivery, 14 May.pdf
Including Mental Health Support in Project Delivery, 14 May.pdf
 
Envelope of Discrepancy in Orthodontics: Enhancing Precision in Treatment
 Envelope of Discrepancy in Orthodontics: Enhancing Precision in Treatment Envelope of Discrepancy in Orthodontics: Enhancing Precision in Treatment
Envelope of Discrepancy in Orthodontics: Enhancing Precision in Treatment
 
philosophy and it's principles based on the life
philosophy and it's principles based on the lifephilosophy and it's principles based on the life
philosophy and it's principles based on the life
 
An overview of the various scriptures in Hinduism
An overview of the various scriptures in HinduismAn overview of the various scriptures in Hinduism
An overview of the various scriptures in Hinduism
 
Improved Approval Flow in Odoo 17 Studio App
Improved Approval Flow in Odoo 17 Studio AppImproved Approval Flow in Odoo 17 Studio App
Improved Approval Flow in Odoo 17 Studio App
 

Basic math akash

  • 1.
  • 2. Project :- Basic Mathematics To:- Ms. Kavita Gokhale From :- Name Roll no . Manish tripathi 37 Suhas vanve 38 Akash varaiya 39 Chirag vasani 40 Vijitha das 41 Dipesh waghe 42
  • 3.
  • 4.
  • 5. FOUR QUARTERS -+=- --=+ ++=+ +-=-
  • 6. Sign rules  Adding Sign rules Positive + Positive = Positive eg: 5 + 4 = 9 Negative + Negative = Negative eg: (- 7) + (- 2) = - 9 Sum of a negative and a positive number: Use the sign of the larger number and subtract eg: (- 7) + 4 = -3 6 + (-9) = - 3 (- 3) + 7 = 4 5 + ( -3) = 2
  • 7.  Subtracting Rules: Negative - Positive = Negative eg: (- 5) - 3 = -5 + (-3) = -8 Positive - Negative = Positive + Positive = Positive eg: 5 - (-3) = 5 + 3 = 8 Negative - Negative = Negative + Positive = Use the sign of the larger number and subtract (Change double negatives to a positive) eg:(-5) - (-3) = ( -5) + 3 = -2 (-3) - ( -5) = (-3) + 5 = 2
  • 8. Integers Numbers Positive Numbers • +1, +2, +3,+4. every number which is greater than 1 is called positive numbers.
  • 9. Negative Number • -1, -2, -3, -4 every number which is less than 1 is called negative numbers
  • 10. Writing integers Example Written as Read as 1) (+55) + (-30) 55+ (-30) Fifty –five plus negative thirty 2) (+49) + (+14) 49+(14) Forty-nine plus Or 49+14 fourteen 3)(-27) + (-127) (-27) +(-127) Negative twenty-seven plus negative hundred and twenty-seven
  • 11. Multiplication and division of integers • Ex. (1) (-14) X (-5) The magnitudes of -14 and -5 are 14 and 5 respectively Their product, 14X5 = 70 (-14) X(-5)=70 The product of two negative numbers is positive.
  • 12. Carry out the following multiplications: • 12X(-3) • (-6) X4 • (-15)X(-5) • 35X8 • (-38)X(-2) • 15X(-61)
  • 13. Carry out the following Divisions: • (-15) / (-5) • (-38/ (-2) • 90/6 • (-90)/(-6)
  • 14. PerCENTAGE  You may have come across with news items like the Newspaper , Radio or T.V.  We use the word percent often in everyday affairs For ex. 1)There has been 15per increase in food grain production. 2)The cost of petrol has rises by 5percent.  Let us find out the meaning of these words and learn how they are used.
  • 15. Definition • Percent can be defined as “of one hundred.” of 100
  • 16. Definition • “Cent” comes from the Latin and means 100.
  • 17. Convert percent to number : multiply by 100 1. 25%= 25 = 1 100 4
  • 18. Comparing Money & Percents • RS 0.50 is ½ of a rupee • 50% also means ½
  • 19. 20 % Means 20 parts out of 100 or 20 hundredths. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
  • 20. Given: • Cost price=Rs 60 • discount=25% • Amount of discount =25% of (60) = 25 x 60 100 Ans =15.Rs Price After Discount:- =Cost price –discount amount =60 – 15 =Rs 45.Rs Total cost of shoes is 45 Rs.
  • 21. • Given: • cost price= Rs 30 • Tax=7% • Amount of tax=7% of (30) = 7 x 30 100 Ans =2.10 Rs. Price after discount=cost price-discount amt =30 + 2.10 Ans=32.10 Rs. Total cost of shirt is 32.10 Rs.
  • 22. DECIMAL FRACTION INTO PERCENTAGE  Convert the following decimal fraction into percentage.  Examples :- 1) 0.52 = 52/100 = 52% 2) 0.060 = 6/100 = 6% 3) 0.4 = 0.40 = 40/100 = 40% 4) 1.0 = 1.00 = 100/100 = 100%
  • 23. PERCENTAGE OF A GIVEN NUMBER Convert the following fraction into percentage. Find out a given percentage of a given numbers. Example :- 1)50% of 70 means 70x50/100 = 35 2)3% of 25000 mean 25000x3/100 = 750 3) There are 40 percent girls in a certain school . If the number of children in the school is 950, what is the number of girls in the school. 40% of 950 = 950x40/100 = 380 Ans - Number of girls is 380
  • 24. FIND PERCENTAGE Find out what percentage of a given number forms of another number. 24,50 24/50= 24x2/50x2 = 48/100 = 48% 2) 222 , 300 222/300 = 222÷3/300÷3 = 74/100 = 74%
  • 25.
  • 26. E.g. : = 25 x [ 113 – 9 + 2 x 13 ] = 25 x [ 113 – 9 + 26 ] = 25 x [ 104 + 26 ] = 25 x 130 = 3250 Solve the following ? 1. (130 + 91) x ( 2 + 8 ) = ? Ans. 2210 2. 103 + 91 x 2 + 8 = ? Ans. 293
  • 27. The End Bibliography : Mathematics Text book (Standard Six ) www.wikipedia.co.in www.slideshare.com http://cgl.microsoft.com/ clipgallerylive/default.asp