1 / 42

# Fraction IX Least Common Multiple Least Common Denominator - PowerPoint PPT Presentation

Fraction IX Least Common Multiple Least Common Denominator. Product. The answer to a multiplication problem. 6 X 6 = 36. What is the product?. 7 X 8 = 56. What is the product?. 8 X 9 = 72. Multiple. The product of a whole number multiplied times any other whole number.

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

## PowerPoint Slideshow about ' Fraction IX Least Common Multiple Least Common Denominator' - laith-grant

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

### Fraction IXLeast Common Multiple Least Common Denominator

• The answer to a multiplication problem.

6 X 6 = 36

7 X 8 = 56

8 X 9 = 72

• The product of a whole number multiplied times any other whole number.

Some multiples of 6

6, 12, 18, 24, 30, 36, 42

5, 10, 15, 20, 25, 30, 35

7, 14, 21, 28, 35, 42, 49

4, 8, 12, 16, 20, 24, 28

9, 18, 27, 36, 45, 54, 63

• A number that is a multiple of two or more numbers.

Some multiples of 3 & 6

6, 12, 18, 24, 30, 36, 42

8, 16, 24, 32, 40, 48, 56

12, 24, 36, 48, 56, 60

10, 20, 30, 40, 50, 60

• The smallest common multiple of a set of two or more numbers.

5 = 5, 10, 15, 20, 25, 30

6 = 6, 12, 18, 24, 30, 36

3 = 3, 6, 9, 12, 15, 21, 24

8 = 8, 16, 24, 32, 40, 48

4 = 4, 8, 12, 16, 20, 24

8 = 8, 16, 24, 32, 40, 48

6 = 6, 12, 18, 24, 30, 36

8 = 8, 16, 24, 32, 40, 48

4 = 4, 8, 12, 16, 20, 24

10 = 10, 20, 30, 40, 50,

3 = 3, 6, 9, 12, 15, 21,

9 = 9, 18, 27, 36, 45, 54

• Find the multiples of each denominator.

1

5

= 5, 10, 15, 20, 25, 30

1

+

10

= 10, 20, 30, 40, 50

• Compare the lists of multiples. Circle the common multiples between the two lists.

1

5 = 5, 10, 15, 20, 25, 30

1

+

10 = 10, 20, 30, 40, 50

• Use the lowest common multiple as the denominator.

1

5 = 5, 10, 15 ,20 ,25 ,30

1

+

10 = 10, 20, 30, 40, 50

• This number is also called the least common denominator.

1

5 = 5, 10, 15 ,20 ,25 ,30

1

+

10 = 10, 20, 30, 40, 50

1

2 = 2, 4, 6, 8, 10, 12

1

+

8 = 8, 16, 24, 32, 40

1

10 = 10, 20, 30, 40,

1

+

8 = 8, 16, 24, 32, 40

1

10 = 10, 20, 30, 40,

1

+

4 = 4, 8, 12, 16, 20,

1

2 = 2, 4, 6, 8, 10,

1

+

4 = 4, 8, 12, 16, 20,

1

2 = 2, 4, 6, 8, 10, 12

1

+

12 = 12, 24, 36, 48

1

3 = 3, 6, 9, 12, 15

1

+

4 = 4, 8, 12, 16, 20,

1

3 = 3, 6, 9, 12, 15

1

+

5 = 5, 10, 15, 20, 25,

1

3 = 3, 6, 9, 12, 15

1

+

9 = 9, 18, 27, 36, 45,

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Check to see if the smaller denominator

divides evenly into the larger denominator.

If it does, use the larger denominator for

1

3 will divide evenly into 9,

so 9 is your LCD or LCM.

3

1

+

9

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

2 will divide evenly into 4,

so 4 is your LCD or LCM.

2

1

+

4

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

2 will divide evenly into 10,

so 10 is your LCD or LCM.

2

1

+

10

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

2 will divide evenly into 12,

so 12 is your LCD or LCM.

2

1

+

12

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

4 will divide evenly into 8,

so 8 is your LCD or LCM.

4

1

+

8

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

3 will divide evenly into 6,

so 6 is your LCD or LCM.

3

1

+

6

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

3 will divide evenly into 12,

so 12 is your LCD or LCM.

3

1

+

12

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

3 will divide evenly into 15,

so 15 is your LCD or LCM.

3

1

+

15

Shortcut for Finding the Least Common Denominator or Least Common Multiple

Using the shortcut, what is the LCD or

LCM?

1

3 will not divide evenly into

8, so find the least common

multiple.

3

1

+

8