Your SlideShare is downloading. ×
Basic math akash
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Basic math akash

323
views

Published on

Published in: Education

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
323
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Project :- Basic MathematicsTo:- Ms. Kavita GokhaleFrom :-Name Roll no .Manish tripathi 37Suhas vanve 38Akash varaiya 39Chirag vasani 40Vijitha das 41Dipesh waghe 42
  • 2. FOUR QUARTERS-+=- --=+++=+ +-=-
  • 3. 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
  • 4.  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
  • 5. Integers NumbersPositive Numbers • +1, +2, +3,+4. every number which is greater than 1 is called positive numbers.
  • 6. Negative Number• -1, -2, -3, -4 every number which is less than 1 is called negative numbers
  • 7. Writing integersExample Written as Read as1) (+55) + (-30) 55+ (-30) Fifty –five plus negative thirty2) (+49) + (+14) 49+(14) Forty-nine plus Or 49+14 fourteen3)(-27) + (-127) (-27) +(-127) Negative twenty-seven plus negative hundred and twenty-seven
  • 8. Multiplication and division of integers• Ex. (1) (-14) X (-5)The magnitudes of -14 and -5 are 14 and 5 respectivelyTheir product, 14X5 = 70(-14) X(-5)=70The product of two negative numbers is positive.
  • 9. Carry out the following multiplications:• 12X(-3)• (-6) X4• (-15)X(-5)• 35X8• (-38)X(-2)• 15X(-61)
  • 10. Carry out the following Divisions: • (-15) / (-5) • (-38/ (-2) • 90/6 • (-90)/(-6)
  • 11. PerCENTAGE You may have come across with news items like the Newspaper , Radio or T.V. We use the word percent often in everyday affairsFor 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.
  • 12. Definition• Percent can be defined as “of one hundred.” of 100
  • 13. Definition• “Cent” comes from the Latin and means 100.
  • 14. Convert percent to number : multiply by 1001. 25%= 25 = 1 100 4
  • 15. Comparing Money & Percents• RS 0.50 is ½ of a rupee• 50% also means ½
  • 16. 20 % Means20 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
  • 17. • 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.
  • 18. • 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.
  • 19. 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%
  • 20. PERCENTAGE OF A GIVEN NUMBERConvert the following fraction into percentage.Find out a given percentage of a given numbers.Example :-1)50% of 70 means 70x50/100 = 352)3% of 25000 mean 25000x3/100 = 7503) There are 40 percent girls in a certain school . If thenumber of children in the school is 950, what is the number ofgirls in the school. 40% of 950 = 950x40/100 = 380 Ans - Number of girls is 380
  • 21. FIND PERCENTAGEFind out what percentage of a given number forms ofanother number.24,50 24/50= 24x2/50x2 = 48/100 = 48%2) 222 , 300 222/300 = 222÷3/300÷3 = 74/100 = 74%
  • 22. 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
  • 23. The EndBibliography : Mathematics Text book (Standard Six )www.wikipedia.co.inwww.slideshare.comhttp://cgl.microsoft.com/clipgallerylive/default.asp