Greatest Common Factor

Reorder the following:

What are the steps for finding the GCF of two numbers while using the ladder method.

• Multiply all numbers to the left of the ladder to find the GCF

• Find a common factor between both numbers

• Continue finding factors until the only common factor remaining is 1

• Set up your ladder

Find the greatest common factor between 12 and 36

• 3

• 6

• 12

• 18

Find the greatest common factor between 45 and 75

• 9

• 25

• 5

• 15

Find the greatest common factor between 24 and 48

• 12

• 24

• 6

• 8

• 2

• 28

• 4

• 8

• 2

• 4

• 6

• 8

• 5

• 15

• 10

• 7

Use the picture attached to find ALL errors.

SELECT ALL THAT APPLY!!!

• There's no error

• The 15 should have been a 5

• The 30 should have been a 6

• The factoring should have stopped at 5 and 6

Use the picture attached to find ALL errors.

SELECT ALL THAT APPLY!!!

• There are no errors

• The factoring is incorrect for 28

• The factoring is incorrect for 32

• The greatest common factor is 8

Use the picture attached to find ALL errors.

SELECT ALL THAT APPLY!!!

• There are no errors

• The GCF is 7

• The factoring for 14 is incorrect

• The factoring for 18 is incorrect