GCF and LCM

GCF of: 
14 and 20

• 7
• 28
• 2
• 6

LCM of: 
5 and 8

• 20
• 40
• 5
• 8

LCM of:
10 and 5

• 5
• 10
• 15
• 50

GCF of: 
5 and 7

• 1
• 3
• 5
• 7

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

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

What are the factors of 25?

• 1, 2, 3, 5, 10, 15, 25
• 1, 5,  25
• 1, 25
• 1, 5

Is this question asking to find GCF or LCM?

• GCF
• LCM

Peter has 18 oranges and 27 pears. He wants to make fruit baskets with the same number of each fruit in each basket. What is the greatest number of fruit baskets he can make?

• 1
• 2
• 3
• 4

Find the GCF of 64 and 144.
Hint-Remember to use your factor trees to help you.

• 8
• 6
• 16
• 2