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CHAPTER 13 FRACTIONS 4TH GRADE.

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Presentation on theme: "CHAPTER 13 FRACTIONS 4TH GRADE."— Presentation transcript:

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
Asia has more people than any other continent. About what fraction of people on Earth live in Asia? ASIA N.A. S.A. A AFRICA EURO

25 Chris Camron Bradon Lexie
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 x 1 or 10 = 2 x or = 5 x 2

31 Write the product of each number in TWO different ways.
36 42 12 64 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 She gets 2 more blouses for her birthday. What are all of the
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 pictures on her science board. Describe every possible array
Desie wants to put 15 pictures on her science board. Describe every possible array she can make.

36 factor also has 3 as a factor. WHY? Can you think of some other
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 active volcanoes on Earth erupt
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 If 1 foot equals 12 inches, how many inches long is the manatee?
A manatee is 12 feet long. If 1 foot equals 12 inches, how many inches long is the manatee?

41 How can you find multiples How many trips will it make in 1 hour?
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 Campfire and Sing-a-long
Family Reunion Which activities are scheduled to last more than 1 hour and 30 minutes? _______________ Lidia’s family arrived at the reunion at 8:30 a.m. How long do they have before the trip to the lake? ______________ Take Lake Tour 10:15 a.m. – 2:30 p.m. Slide Show 4:15 p.m. – 5:10 p.m. Dinner 5:30 p.m. – 7:00 p.m. Campfire and Sing-a-long 7:55 pm. To 9:30 p.m.

45 Holly’s 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 _______

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

50 400 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 15 10 5 7 2 20 30 40 12 8 24 3 1 6

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 $28. Who got the better deal?
$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 E F T C O S 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 Emily’s dog weighs 43 pounds more than Joan’s 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 William’s apartment?


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