Greatest Common Factor GCF

Multiple Choice

Factors are....

• Smaller numbers you can count by to get to the bigger number.

• Smaller numbers you can divide the bigger number by.

• All of the above

Multiple Choice

Greatest Common Factor

• The biggest number you can count by to get to 2 numbers by

• The biggest number you can divide 2 numbers by

• All of the above

Multiple Choice

Which is NOT a factor of 9?

• 0
• 1
• 3
• 9

Open Ended

List the factors of 6

Open Ended

List the factors of 18

Open Ended

What is the GCF of 6 and 18?

Multiple Choice

Ms. Hatzigeorgiou is making goodie bags for her birthday party.

She has 12 pieces of Jelly Beans and 18 pieces of skittles.

She wants each goodie bag to be identical with the same amount of each candy in each bag. What is the greatest number of goodie bags she can make for her party without having leftovers?

• 9

• 6

• 4

• 3

Multiple Choice

List all the factors of 12

• 1, 2, 3, 4, 6, 12
• 1, 2, 4, 12
• 1, 12
• 1, 2, 3, 4, 5, 6, 12

Multiple Choice

What are the factors of 18?

• 1,2,3,6,9,18

• 1, 5, 7, 25

• 1, 18

• 0

Multiple Choice

What is the GCF of 12 and 18?

• 6

• 18
• 1
• 3

Multiple Choice

What is the GCF of 8 and 24?

• 1

• 24

• 8

• 4

Multiple Choice

Bill cut out 6 squares and 8 circles.

He divided the cutouts into groups so that the same number of squares and circles were in each group. What is the greatest number of groups he could have made?

• 2

• 3

• 4

Multiple Choice

Maya and Evelyn are trying to split 12 apples and 18 oranges equally among themselves.

What is the greatest number of fruits each can have without leaving any fruit?

• 6

• 2

• 8

• 4

Multiple Choice

A rectangular garden is 24 meters long and 36 meters wide.

What is the greatest common factor of the length and width?

• 6

• 24

• 18

• 12

Multiple Choice

What is the Greatest Common Factor of 35 and 49

• 5

• 7

• 1

• 17

Multiple Choice

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

Multiple Choice

Find the GCF of 12 and 30

• 12

• 2

• 5

• 6

Multiple Choice

What number is a factor for EVERY number?

• 0
• 1
• 2
• 100

Multiple Choice

What is the GCF of 4 and 12?

• 3

• 6

• 4

• 1