LCM and GCF

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

• 1
• 2
• 7
• 14

Find the Greatest Common Factor (GCF) OF 32 and 64.

• 1
• 2
• 4
• 32

Find the Greatest Common Factor (GCF) OF 12,  18 & 30

• 1
• 3
• 6
• 12

Find the Least Common Multiple of 9 and 6

• 18
• 36
• 38
• 72

What is the LCM?

• The LCM is the least common factor that both numbers share the least. 
• The LCM is a multiple that both numbers share the most.  
• The LCM is a multiple that both numbers share the least. 
• The LCM is a factor that both numbers share the least. 

What number could be a common denominator for these two fractions?
2/3   and   3/4

• 3
• 4
• 7
• 12

What is the least common denominator of 1/7 and 3/6?

• 14
• 21
• 7
• 42

Karen has 30 photos from a trip to Dallas and 48 photos from a trip to Austin. She wants to put all the photos in an album so that the photos from each trip are in separate sections. What is the greatest number of photos she can put on each page?

• 18 photos
• 6 photos
• 240 photos

What is the LCM of 16 and 24?

• 24
• 48
• 8

What is the prime factorization of 24?

• 3 x 8
• 3 x 2 x 2 x 2
• 4 x 6
• 2 x 2 x 3