1 / 11

932840276498713209129318947

48209830958569408909284234. GREATEST COMMON FACTOR. 932840276498713209129318947. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. There are two different methods for finding the GCF of a set of numbers.

lacy
Download Presentation

932840276498713209129318947

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 48209830958569408909284234 GREATEST COMMON FACTOR 932840276498713209129318947

  2. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. There are two different methods for finding the GCF of a set of numbers. METHOD 1 List all the factors of each number Find the largest common factor METHOD 2 Divide both numbers by the same factors – multiply all these factors Let’s take a look at both ways!!!!!

  3. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. Find the GCF of 12 and 18 METHOD 1 List all the factors of each number Find the largest common factor Factors of 12 = 1 , 2, 3, 4, 6, 12 Factors of 18 = 1, 2, 3, 6, 9, 18 Circle the greatest factor they have in common The Greatest Common Factor GCF is 6

  4. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. Find the GCF of 12 and 18 METHOD 2 Divide both numbers by the same factors – multiply all these factors 12 18 2 2 x 3 = 6 3 6 9 2 3 The Greatest Common Factor GCF is 6 6 x 2 =12 6 x 3 = 18 CHECK:

  5. Find the Greatest Common Factor GCF of 24 and 36 METHOD 1 ALL FACTORS METHOD 2 DIVISION 24 = 1, 2, 3, 4, 6, 8, 12, 24 36 = 1, 2, 3, 4, 6, 9, 12, 18, 36 4 24 36 3 6 9 2 3 Circle greatest common factor Multiply common factors GCF = 12 Check 12 x 2 = 24 12 x 3 = 36 GCF = 4 x 3 = 12

  6. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. Find the GCF of 90 and 120 METHOD 2 Repeated Division 90 120 10 10 x 3 = 30 3 9 12 3 4 The Greatest Common Factor GCF is 30 CHECK: 30 x 3 = 90 30 x 4 = 120

  7. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. Find the GCF of 14 and 20 METHOD 2 Repeated Division 14 20 2 2 7 10 The Greatest Common Factor GCF is 2 CHECK: 2 x 7 =14 2 x 10 = 20

  8. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. Find the GCF of 32 and 80 METHOD 2 Repeated Division 32 80 2 2 x 4 x 2 = 16 4 16 40 2 4 10 2 5 The Greatest Common Factor GCF is 16 CHECK: 16 x 2 =32 16 x 5 = 80

  9. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. Find the GCF of 77 and 15 METHOD 2 Repeated Division 77 15 1 1 77 15 The Greatest Common Factor GCF is 1 CHECK: 1 x 77 = 77 1 x 15 = 15

  10. The Greatest Common Factor GCF of two or more numbers is the largest factor they have in common. Find the GCF of 36, 48, and 30 METHOD 2 Repeated Division 36 48 30 2 2 x 3 = 6 18 24 15 3 6 8 5 The Greatest Common Factor GCF is 6 CHECK: 6 x 6 =36 6 x 8 = 48 6 x 5 =30

  11. **ASSIGNMENT** • Page 236 (#8-17, 37-38) Do Your Best!

More Related