Gcf Ladder

Sara had 16 red flowers and 24 yellow flowers.  She wants to make bouquets with the same number of each color flower in each bouquet.  What is the greatest number of bouquets that she can make?

• 4

• 2

• 48

• 8

What is the GCF of 20, 44, and 88?

• 4

• 2

• 22

• 1

What is the GCF of 20 and 30?

• 5

• 2

• 10

• 20

What is the GCF of 8 and 10?

• 1

• 3

• 4

• 2

Find the Greatest  Common Factor (GCF) of 14 & 22.

• 1

• 2

• 7

• 14

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

Tags

CCSS.4.OA.C.5

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

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

• Find a common factor between both numbers

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

• 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

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