Math grade 4
Download
1 / 53

Math Grade 4 - PowerPoint PPT Presentation


  • 87 Views
  • Uploaded on
  • Presentation posted in: General

Math Grade 4. Mrs. Ennis Adding and Subtracting Fractions Part 2 Lesson Twenty-Three. 451 + X + 127 = 891 87,004 – 25,987 = 7 x R = 56 32 ÷ 4 = What is the product of 3 and 5? (>, <, =) 5ft. _________2 yards. 7. What is the area (length x width) of this figure?

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Math Grade 4 ' - elmo-barr


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Math grade 4

MathGrade 4

Mrs. Ennis

Adding and Subtracting Fractions Part 2

Lesson Twenty-Three


Math grade 4

451 + X + 127 = 891

87,004 – 25,987 =

7 x R = 56

32 ÷ 4 =

What is the product of 3 and 5?

(>, <, =) 5ft. _________2 yards


Math grade 4

7. What is the area (length x width) of this figure?

8. What is 200 more than 8,956?

9. It takes Nancy 15 minutes to walk a mile. How many miles would she walk in 1½ hours?

1m

1m

10m

6m


Math grade 4

10. Larry reads an average of 20 pages an hour. How many hours will it take him to read a book with 160 pages?


Math grade 4

Adding and Subtracting Mixed Numerals hours will it take him to read a book with 160 pages?


Vocabulary
Vocabulary hours will it take him to read a book with 160 pages?

A proper fraction has a numerator that is less than its denominator.

An improper fraction has a numerator that is more than or equal to its denominator.

A mixed number shows the sum of a whole number and a proper fraction.


Examples
Examples hours will it take him to read a book with 160 pages?

ImproperFractions

Proper Fractions

5

7

12

9

8

9

10

3

Mixed Numbers

3

17

8

3

20

5


Mixed numbers and improper fractions
Mixed hours will it take him to read a book with 160 pages?Numbers and Improper Fractions

15

15

15

is an improper fraction.

4

4

4

3

3

4

For example,

We can write improper fractions as mixed numbers.

can be shown as

=


Mixed numbers to improper fractions
Mixed Numbers to Improper Fractions hours will it take him to read a book with 160 pages?


Math grade 4

1 hours will it take him to read a book with 160 pages?

3

4

3

1

Improper Fraction

Mixed Number


Improper fractions
Improper Fractions hours will it take him to read a book with 160 pages?

9

4

2

1

4


Math grade 4

Improper Fractions hours will it take him to read a book with 160 pages?

2

3

8

3

2


Improper fractions1
Improper Fractions hours will it take him to read a book with 160 pages?

15

4

3

3

4


Writing mixed numbers as improper fractions
Writing Mixed Numbers as Improper Fractions hours will it take him to read a book with 160 pages?

  • Multiply the denominator of the fraction by the whole number.

  • Add the product to the numerator.

  • The resulting sum is the numerator of the improper fraction.

  • The denominator remains the same.


Example
Example hours will it take him to read a book with 160 pages?

2

14

4

3

3

Denominator stays the same.

4 X 3

+ 2 = 14


Example1
Example hours will it take him to read a book with 160 pages?

4

19

3

5

5

Denominator stays the same.

3 X 5

+ 4 = 19


Example2
Example hours will it take him to read a book with 160 pages?

1

5

2

2

2

Denominator stays the same.

2 X 2

+ 1 = 5


Example3
Example hours will it take him to read a book with 160 pages?

4

34

6

5

5

Denominator stays the same.

6 X 5

+ 4 = 34


Improper fractions to mixed numbers
Improper Fractions to Mixed Numbers hours will it take him to read a book with 160 pages?


Improper fractions to mixed numbers1
Improper hours will it take him to read a book with 160 pages?Fractions to Mixed Numbers

+

+

+

+

=

1

1

1

1

8

5

8

8

8

5

=

+

+

+

+

8

8

8

8

8

8

37

37

=

8

8

4

4

5

8

Convert to a mixed number.


Improper fractions to mixed numbers2
Improper hours will it take him to read a book with 160 pages?Fractions to Mixed Numbers

+

+

+

+

=

1

1

1

1

3

3

3

3

2

2

=

+

+

+

+

3

3

3

3

3

3

14

14

=

3

3

4

4

2

3

Convert to a mixed number.


Improper fractions to mixed numbers3
Improper hours will it take him to read a book with 160 pages?Fractions to Mixed Numbers

+

+

+

=

1

1

1

5

5

3

5

3

=

+

+

+

5

5

5

5

5

18

18

=

5

5

3

3

5

Convert to a mixed number.


Writing improper fractions as mixed numbers
Writing Improper Fractions as Mixed Numbers hours will it take him to read a book with 160 pages?

  • If you have an improper fraction, you can divide the denominator into the numerator.

  • The quotient becomes the whole number part of the mixed number.

  • The remainder is the numerator of the fraction.

  • The divisor is the denominator of the fraction.


Example4
Example hours will it take him to read a book with 160 pages?

13

2

whole number

5

5

13

10

3

numerator

denominator

3

2

5

=


Example5
Example hours will it take him to read a book with 160 pages?

23

5

whole number

4

4

23

20

3

numerator

denominator

3

5

4

=


Example6
Example hours will it take him to read a book with 160 pages?

19

9

whole number

2

2

19

18

1

numerator

denominator

1

9

2

=


Example7
Example hours will it take him to read a book with 160 pages?

36

6

whole number

6

6

36

36

0

numerator

denominator

6

=


Let s try it
Let’s hours will it take him to read a book with 160 pages?try it!

1

3

Change each improper fraction into a mixed numeral.

1

=

4

3

1

2

1

6

4

2

4

1

=

=

2

3

1

14

8

6

8

1

=

=


Let s try it1
Let’s hours will it take him to read a book with 160 pages?try it!

3

=

Change each improper fraction into a mixed numeral.

21

7

17

3

2

3

5

=

1

5

3

32

10

2

10

3

=

=


Math grade 4

17 hours will it take him to read a book with 160 pages?

5

2

5

=

3

Change each mixed numeral into an improper fraction.

21

8

5

8

=

2

4

5

=

3

19

5


Math grade 4

56 hours will it take him to read a book with 160 pages?

9

2

9

=

6

Change each mixed numeral into an improper fraction.

33

7

5

7

=

4

2

5

=

8

42

5


Adding mixed numerals with like denominators
Adding hours will it take him to read a book with 160 pages? Mixed Numerals with Like Denominators


Math grade 4

Adding hours will it take him to read a book with 160 pages?Mixed Numbers

Stack your problem

with fractions and whole numbers lining up.

2

7

2. Make sure your fractions have the same denominator.

6

3. Add your fractions.

4. Add your whole numbers.

5. Make sure any fractions are in simplest form.

3

7

4

+

10

5

7


Math grade 4

Adding hours will it take him to read a book with 160 pages?Mixed Numbers

Stack your problem

with fractions and whole numbers lining up.

6

9

2. Make sure your fractions have the same denominator.

3

3. Add your fractions.

4. Add your whole numbers.

5. Make sure any fractions are in simplest form.

1

9

5

+

8

7

9


Math grade 4

Adding hours will it take him to read a book with 160 pages?Mixed Numbers

Stack your problem

with fractions and whole numbers lining up.

6

10

2. Make sure your fractions have the same denominator.

4

3. Add your fractions.

4. Add your whole numbers.

5. Make sure any fractions are in simplest form.

2

10

5

+

9

8

10

4

5

=


Math grade 4

Adding hours will it take him to read a book with 160 pages?Mixed Numbers

Stack your problem

with fractions and whole numbers lining up.

4

10

2. Make sure your fractions have the same denominator.

5

3. Add your fractions.

4. Add your whole numbers.

5. Make sure any fractions are in simplest form.

6

10

2

+

7

1

=8

10

10

+

=


Math grade 4

Adding hours will it take him to read a book with 160 pages?Mixed Numbers

2

9

3

9

11

9

=1

6

8

9

4

=11

2

9

+

10 + 1

2

9

10

11

9

2

9

=11


Math grade 4

Adding hours will it take him to read a book with 160 pages?Mixed Numbers

2

4

3

4

6

4

=1

7

3

4

4

=12

1

2

+

11 + 1

1

2

11

6

4

1

2

=12


Math grade 4

Adding hours will it take him to read a book with 160 pages?Mixed Numbers

2

5

=1

5

5

2

3

5

5

= 8

+

7 + 1

7

5

5

= 8


Math grade 4

Subtracting hours will it take him to read a book with 160 pages? Mixed Numerals with Like Denominators


Math grade 4

Subtracting hours will it take him to read a book with 160 pages?Mixed Numbers

Stack your problem

with fractions and whole numbers lining up.

5. Make sure any fractions are in simplest form.

3. Determine whether you need to make improper fractions.

5

7

2. Make sure your fractions have the same denominator.

4. Subtract your whole numbers and then your fractions.

6

_

3

7

4

2

2

7


Math grade 4

Subtractinging hours will it take him to read a book with 160 pages?Mixed Numbers

5. Make sure any fractions are in simplest form.

3. Determine whether you need to make improper fractions.

Stack your problem

with fractions and whole numbers lining up.

6

9

4. Subtract your whole numbers and then your fractions.

2. Make sure your fractions have the same denominator.

8

3

9

1

3

=

_

3

9

2

6

6

3

9

1

3


Math grade 4

Subtracting hours will it take him to read a book with 160 pages?Mixed Numbers

4

7

5. Make sure any fractions are in simplest form.

4. Subtract your fractions and then your whole numbers if necessary.

Stack your problem

with fractions and whole numbers lining up.

6

46

7

3. Determine whether you need convert mixed numerals to improper fractions.

2. Make sure your fractions have the same denominator.

=

_

6

7

3

27

7

=

19

7

5

7

2

=


Math grade 4

Subtracting hours will it take him to read a book with 160 pages?Mixed Numbers

3

9

5. Make sure any fractions are in simplest form.

4. Subtract your fractions and then your whole numbers if necessary.

Stack your problem

with fractions and whole numbers lining up.

8

75

9

3. Determine whether you need convert mixed numerals to improper fractions.

2. Make sure your fractions have the same denominator.

=

_

5

9

1

14

9

=

61

9

7

9

6

=


Math grade 4

Subtracting hours will it take him to read a book with 160 pages?Mixed Numbers

3

8

5. Make sure any fractions are in simplest form.

4. Subtract your fractions and then your whole numbers if necessary.

Stack your problem

with fractions and whole numbers lining up.

3

27

8

3. Determine whether you need convert mixed numerals to improper fractions.

2. Make sure your fractions have the same denominator.

=

_

5

8

5

8

=

3

4

22

8

6

8

2

2

=


Math grade 4

Subtracting hours will it take him to read a book with 160 pages?Mixed Numbers

1

4

5. Make sure any fractions are in simplest form.

4. Subtract your fractions and then your whole numbers if necessary.

Stack your problem

with fractions and whole numbers lining up.

5

21

4

3. Determine whether you need convert mixed numerals to improper fractions.

2. Make sure your fractions have the same denominator.

=

_

3

4

3

15

4

=

6

4

2

4

1

2

1

=


Online practice
Online Practice hours will it take him to read a book with 160 pages?

http://www.aaamath.com/fra66ex2.htm

http://www.ixl.com/math/grade-4/add-and-subtract-fractions-with-like-denominators-word-problems

http://www.ixl.com/math/grade-3/add-and-subtract-fractions-with-like-denominators


Math fun
Math Fun: hours will it take him to read a book with 160 pages?

Sharon has fewer than 20 coins. When she puts them in piles of 5, she has 1 left over. When she puts them in piles of 3, she also has 1 left over. How many coins does Sharon have?


Answer
Answer: hours will it take him to read a book with 160 pages?

Sharon has 16 coins.

5+5+5+1 = 16

3+3+3+3+3+1 + 16


Answer1
Answer: hours will it take him to read a book with 160 pages?

Sylvia has 39 coins.

6+6+6+6+6+6+3 = 39

5+5+5+5+5+5+5+4 = 39


Math fun1
Math Fun: hours will it take him to read a book with 160 pages?

Sylvia has fewer than 40 coins but more than 10. If she puts them in piles of 6, she has 3 left over. If she puts them in piles of 5, she has 4 left over. How many coins does Sylvia have?


Math grade 4

Resources: hours will it take him to read a book with 160 pages?

http://mathlearnnc.sharpschool.com/UserFiles/Servers/Server_4507209/File/Instructional%20Resources/G4WW1-4.pdf

  • http://www.aaamath.com/fra66ex2.htm

  • http://www.mrhammond.org/math/mathlessons/

  • http://www.ixl.com/math/grade-4/add-and-subtract-fractions-with-like-denominators-word-problems

  • http://www.teachingideas.co.uk/maths/contents08fracdecperratprop.htm

  • http://www.ixl.com/math/grade-3/add-and-subtract-fractions-with-like-denominators


ad
  • Login