pecahan dalam keseharian kontekstual.pptx

menghitung pecahan

1. FRACTIONS UNIT

2. Numerator = # on top Denominator = # on the bottom (down below) The Denominator How many equal parts are described? How many equal parts are in all (total)? You can also write it: 1/2

3. Parts of a Whole Whole = 1 complete thing Different from a hole in the ground

4. 1 WHOLE 🡪 fraction The top number and the bottom are the same! 4 5 8 55 86 4 5 8 55 86 Give me some more fractions that equal 1 whole!

5. Parts of a Whole What’s the fraction we should write for each?

6. Write a fraction for the part of each flag that is red. Italy Indonesia Taiwan Austria Germany Spain

7. Parts of a Set What is the total number of fruits? This will be your denominator! What fraction of this set are bananas? What fraction of this set are oranges? What fraction of this set are apples?

8. What fraction of each set is blue? Draw a picture to show the fraction 3/5 as part of a set!

9. Mixed Number Mixed Number: A whole number WITH a fraction. Talk with a partner, think up and write 2 more MIXED NUMBERS on your worksheet packet page. Whole Number Fraction

10. Mixed Number Models Mixed Number = A whole + a fraction 3 wholes + 5/6 (fraction) = mixed number

11. Complete These Statements: A mixed number is the sum of a _____________ And a ________________. The __________________ is the number on the bottom of a fraction, and the _________________ is the number on the top of a fraction.

12. Fractions as Division Statements Fractions are another way to write a division statement!

13. Fractions and Division are Related! 4 5 Fraction Division The numerator always goes inside the house! The denominator always goes OUTSIDE the house!

14. Improper Fractions: YOU CAN DIVIDE! And get a whole number or mixed number! 12 4

15. Proper Fractions: You CANNOT get a whole number or mixed number. 2 3

16. Anne & Pete shared a pizza. How much did they eat in total? How do we describe this using fractions ?      

17. Dave & Trish shared a chocolate bar. How much did they eat in total? How do we describe this using fractions ?      

18. Mike & Denise shared a pizza. How much did they eat in total? How do we describe this using fractions ?           To add fractions, the size of the pieces, the denominators must be the same size.

19. Tammy & Mo shared a chocolate bar. How much did they eat in total? How do we describe this using fractions ?           To add fractions, the size of the pieces, the denominators must be the same size.

20. Derek & Kim shared a pizza. How much did they eat in total? How do we describe this using fractions ?           To add fractions, the size of the pieces, the denominators must be the same size.

21. Adding Fractions   DEMO Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   What common denominator can we use?

22. Adding Fractions   DEMO Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   What common denominator can we use?    

23. Adding Fractions   DEMO Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   What common denominator can we use?

24. Adding Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   What common denominator can we use?             × 2 × 2  

25. Adding Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   What common denominator can we use?             × 3 × 3  

26. Adding Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   What common denominator can we use?             × 4 × 4  

27. Adding Fractions   DEMO Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   × 3 × 3 What common denominator can we use?

28. Adding Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   × 3 × 3 What common denominator can we use?             × 5 × 5   × 2 × 2

29. Adding Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 2 × 2   × 3 × 3 What common denominator can we use?             × 3 × 3   × 4 × 4

30. How do we describe this subtraction using fractions ?           To subtract fractions, the size of the pieces, the denominators must be the same size.

31. Subtracting Fractions   DEMO Using equivalent fractions, we need to make the denominators the same .             × 2 × 2 What common denominator can we use?

32. Subtracting Fractions   DEMO Using equivalent fractions, we need to make the denominators the same .             × 2 × 2 What common denominator can we use?

33. Subtracting Fractions   DEMO Using equivalent fractions, we need to make the denominators the same .           × 3 × 3   × 4 × 4 What common denominator can we use?

34. Subtracting Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 3 × 3   × 4 × 4 What common denominator can we use?             × 2 × 2   × 5 × 5

35. Subtracting Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 3 × 3   × 4 × 4 What common denominator can we use?             × 4 × 4   × 5 × 5

36. Subtracting Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 3 × 3   × 4 × 4 What common denominator can we use?             × 5 × 5   × 8 × 8

37. Subtracting Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 3 × 3   × 4 × 4 What common denominator can we use?             × 2 × 2   × 3 × 3

38. Adding & Subtracting Fractions   DEMO YOUR TURN Using equivalent fractions, we need to make the denominators the same .           × 3 × 3   × 4 × 4 What common denominator can we use?            

39. Using equivalent fractions, we need to make the denominators the same . What common denominator can we use?                  

40. 1

41. =

42. 3 Cokelat

43. Cara 1

44. 3 – 1 1 1

45. 3 – 1 1

46. 3 – 1 1 Jadi Sisa cokelat Riko ada 2 ⅕

47. Cara 2

48. –

49. – = = 2 Jadi Sisa cokelat Riko ada 2 ⅕ 2

50. 1 1 1

51. 1 1 1 KPK (2,6) = 6

52. 1 1 1 KPK (2,6) = 6

53. 1 1 1 – 3

54. 1 1 1 – 3

55. 1 1 1 – 3

56. 1 1 1 – 3 = Jadi, sisa coklat Andra bagian

57. + 2 = 2 Jadi, saat ini Andra memiliki 2 cokelat

58. 1 1 1

59. 1 1 1 +

60. 1 1 1 + KPK (4,6) = 12

61. 1 1 1 + KPK (4,6) = 12

62. 1 1 1 Jadi, Cokelat Andra saat ini berjumlah