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CHAPTER 13 FRACTIONS

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CHAPTER 13 FRACTIONS 4TH GRADE How much of the pie is shaded? How much of the pie is not shaded? What are the denominators? What are the numerators? – PowerPoint PPT presentation

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Title: CHAPTER 13 FRACTIONS


1
CHAPTER 13 FRACTIONS
  • 4TH GRADE

2
  • How much of the pie is shaded?
  • How much of the pie is not shaded?

3
  • What are the denominators?
  • What are the numerators?

4
  • What is equivalent to ½?

5
  • Which are equivalent to 1/3?

6
  • Fill in each box with the
  • correct number for the shaded portion.

7
  • How much cake did the kids eat?
  • How much cake is left?

8
  • Shade the correct parts to show the
    equivalent fraction.

9
  • What is the denominator?
  • What is the numerator?
  • What is the percent?

10
  • What is the denominator?
  • What is the numerator?
  • What is the percent?



11
  • What is the denominator?
  • What is the numerator?
  • What is the percent?



12
  • What is the denominator?
  • What is the numerator?
  • What is the percent?


-
13
  • What is the denominator?
  • What is the numerator?
  • What is the percent?

-

14
Write an equivalent fraction.
1/3 1/2 3/4 4/6 2/5
6/8 1/4 2/3 7/12 3/5
15
Write an equivalent fraction.
4/8 5/9 3/5 2/5 3/8
7/21 9/27 8/16 1/18 6/11
16
  • ESTIMATING FRACTIONAL PARTS
  • About what fraction of this square is
    orange?
  • What
    percent
  • is orange?


17
  • ESTIMATING FRACTIONAL PARTS
  • About what fraction of this square is
    blue?
  • What
    percent
  • is blue?


18
  • Estimate the fractional part of each that
    is green.

19
  • What fractional part is red?

20
  • What fractional part is yellow?

21
  • What fractional part is red
  • and yellow?

22
  • What fractional part is green
  • and violet ?

23
  • What fractional part is shaded?
  • What percentage is shaded?
  • Reduce it.


24
  • Asia has more people than any other
    continent. About what fraction of people on
    Earth live in Asia?

ASIA

S.A.
N.A.
A
EURO
AFRICA
25
  • Look at the bar graph below. Which student
    has about 1/3 as many CDs as Bradon?
  • Chris Camron Bradon Lexie

26
  • If more than half of the garden is
    planted with corn, it is possible to
    estimate that 2/3 is planted with beans?

27
  • A bowling alley has 32 bowling
  • balls. Eight are blue, 5 are pink,
  • 6 are red and the rest are black.
  • How many are black?

28
  • Estimate the fractional part that is
    decorated.

29
  • FACTORS as FRACTIONS
  • 10 1 x 10
  • or
  • 10 10 x 1

30
  • FACTORS as FRACTIONS
  • 10 1 x 10 10 10 x 1
  • or
  • 10 2 x 5 or 10 5 x 2

31
  • Write the product of each number in TWO
    different ways.

36 42 12 64
12 20 28 8
25 45 30 99
32
  • Find all the factors of each number.

6 32 17 9 11
25 13 22 15 30
14 18 27 40 21
4 35 7 19 8
33
  • Destiny had 16 blouses.
  • She gets 2 more blouses for her
  • birthday. What are all of the
  • different equal groupings she
  • can make now?

34
  • As part of her science project,
  • Darla is making a model of a
  • wind farm. She wants to put
  • turbines in her model. What
  • are all the ways she can
  • arrange 24 turbines?

35
  • Desie wants to put 15
  • pictures on her science board.
  • Describe every possible array
  • she can make.

36
  • Any number that has 9 as a
  • factor also has 3 as a factor.
  • WHY?
  • Can you think of some other
  • numbers that share factors?

37
  • The largest volcano on Earth is
  • Mauna Loa, located in Hawaii.
  • It is 30,080 feet tall from the sea
  • floor to its highest point.
  • If 13,680 feet of the volcano is
  • above sea level, how many feet
  • are below sea level?

38
  • About 50 out of 1,500 possible
  • active volcanoes on Earth erupt
  • every year. What are the
  • factors of 50?

39
  • On a large wind farm, there are
  • rows of 15 wind turbines each
  • and 4 rows of 11 wind turbines each.
  • How many wind turbines are there
  • on the wind farm in all?

40
  • A manatee is 12 feet long.
  • If 1 foot equals 12 inches, how
  • many inches long is the manatee?

41
  • MULTIPLES
  • How can you find multiples
  • of a number?
  • It takes 8 minutes for a car on the
    roller coaster to make the complete trip.
  • How many trips will it make in 1 hour?

42
  • Write 5 multiples of each number.

100 3 9 10 14
7 1 4 12 25
45 6 27 5 11
8 13 20 50 2
43
  • LOOK carefully. Is the first number a
    multiple of the second?

44, 6 27, 3 30, 6 54, 9 28, 3
45, 5 64, 7 48, 8 33, 11 24, 8
35, 8 63, 7 88, 4 13, 13 62, 6
72, 9 46, 5 39, 3 28, 2 32, 2
44
  • Family Reunion
  • Which activities are scheduled to last more
    than 1 hour and 30 minutes? _______________
  • Lidias family arrived at the reunion at
    830 a.m. How long do they have before the
    trip to the lake? ______________

Take Lake Tour 1015 a.m. 230 p.m.
Slide Show 415 p.m. 510 p.m.
Dinner 530 p.m. 700 p.m.
Campfire and Sing-a-long 755 pm. To 930 p.m.
45
  • Hollys family went apple picking.
  • They picked 5 bags of red
  • apples and I bag of green
  • apples. Write a fraction to
  • represent the part of the bags
  • containing green apples.

46
  • Create a Venn diagram to show all
    multiples of 3 and all multiples of 4.

47
  • Dividing to Find Equivalent Fractions
  • James ate 6/8 of a small pizza. Which
    fraction is equal to 6/8?

48
  • Find equivalent fractions for 4/10 _______
  • Find equivalent fractions for 2/8 _______
  • Find equivalent fractions for 4/5 ________

49
  • You can multiply the numerator and the
    denominator by the same number to find an
    equivalent fraction

1
2
X 2
X 2
X 2
4
8
X 2
X 2
X 2
50
  • You can divide the numerator and
  • the denominator by the same
  • number to find an equivalent
  • fraction.

200
Div 2
Div 10
400
Div 10
Div 2
51
  • Multiply or Divide to find the equivalent
    fractions.

4 9 9 15 10 10 5 7
2 4 10 20 30 40 10 12
8 24 3 8 1 4 6 9
52
  • Julia ordered 12 pizzas for the
  • class party. Each pizza was cut
  • into 8 slices. Each of the 24
  • students ate 4 slices.
  • What fraction of the pizzas was
  • left after the party?
  • Can the fraction be
  • reduced?

53
  • In the school poetry contest, 14
  • of the 50 students that entered
  • will receive a prize. Half of the
  • remaining students receive a
  • certificate. How many students
  • will receive a certificate?

54
  • Two fifths of all states in the
  • United States start with the
  • letters M, A, or N. How can you
  • use equivalent fractions to find
  • out how many states start with
  • these letters?

55
  • Look at the model. Name three equivalent
    fractions for the part of the circle that
    is turquoise.

56
  • One way to show 1/3 is to use
  • 12 cubes to show three groups
  • of 4 cubes each or 4/12.
  • Using 12 or fewer cubes, find 2
  • other fractions that are
  • equivalent to 1/3.

57
  • Keira has 12 cubes. She uses all
  • 12 cubes and separates them
  • into 4 groups. Then she uses 8
  • cubes and separates them into
  • groups. What fraction is Keira
  • trying to make?

58
  • At the car wash, Gary washed 8
  • cars per hour and Sean washed
  • 7 cars per hour. How many cars
  • did Gary wash if Sean washed
  • 24 cars?

59
  • Jacob had 12 books. He showed
  • 8/12 is equivalent to 2/3 by
  • making three groups of 4 and
  • drawing a circle around 2 of the
  • groups. What is another fraction
  • that is equivalent to 2/3?

60
  • Renee runs 3 miles each week.
  • Linda runs 4 times as many
  • miles each week. How many
  • miles does Linda run each
  • week?

61
  • Cathy had 24 quarters. She separated
  • the quarters equally into 4 cups
  • with 6 quarters in each cup.
  • Show all ways that Cathy can
  • separate the quarters into
  • equal groups.

62
  • A store sells school supply packs
  • that contain 12 pencils, and 4
  • pens. Sonya bought enough
  • packs to get 36 pencils. How
  • many pens did she receive?

63
  • Harry bought 6 DVDs on sale for
  • 48. Tyler bought 4 DVDs for
  • 28. Who got the better deal?

64
  • Put each fraction into
  • simplest form.

6/8 15/27 10/20 16/18 12/14
21/24 12/30 3/12 2/10 4/8
12/16 4/6 2/5 8/20 5/15
4/12 9/16 7/14 12/18 15/35
65
  • Vanessa ran 8/12 of the way
  • around the field during P.E.
  • class. Write this fraction in
  • simplest form.

66
  • Shane and Morgan are starting
  • a band. They have 5 other
  • members that practice with
  • them 2 hours each week.
  • What fraction of the band are
  • Shane and Morgan.

67
  • Each day pandas are awake for
  • about 12 hours. They eat for
  • of those 12 hours.
  • What fraction of their awake time
  • are pandas eating?

68
  • Write the factors for 8, 16, and
  • 20. What can you say about
  • all multiples of 4?

69
  • Write all of the factors for 9.
  • What can you say about all
  • factors of 9?

70
  • Write all of the factors of 15.
  • What can you say about
  • these factors?

71
  • Look at each number sentences
  • below. Compare the size of the
  • factor to each product. What can
  • you say about factors and
  • products of whole numbers
  • greater than 0?

8 x 7 56 5 x 46 230 1 x 873 873
72
  • A generalization is a general
  • statement that you think is true.
  • Look carefully to make
  • generalizations.
  • Generalize that all multiples of 5 end in either
    a 0 or a 5 in the ones place.

5 x 1 5 5 x 2 10 5 x 3 15 5 x 4 20 5 x 5 25
73
  • Look at the pattern below.
  • Draw the shape that would
  • come next.

74
  • Write at least five multiples of 10.
  • What generalization can you
  • make about all multiples of 10?

75
  • Look at each group of three
  • letters below. Make a
  • generalization for each group of
  • letters that does not apply to
  • the other group of three letters.

E F T C O S
76
  • Emilys dog weighs 43 pounds
  • more than Joans dog.
  • Together the dogs weigh 81
  • pounds. How much does each
  • dog weigh?

77
  • William lives on the twenty-
  • second floor of a 25-story
  • building. If each floor is
  • feet in height, how many
  • feet above ground level is the
  • floor of Williams apartment?
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