CHAPTER 13 FRACTIONS

1
CHAPTER 13FRACTIONS

• 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?