GCF /LCM Quiz

Prime numbers have:

• Exactly 2 factors
• 2 pairs of factors
• More than 2 factors
• 1 factor

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors

Tags

CCSS.4.OA.B.4

multiples for the number 3 include..

• 4,8,12,16,18,21
• 3,5,7,9,10,12
• 3,4,5,6,7,8
• 3,6,9,12,15,18

Tags

CCSS.6.NS.B.4

Factors of the number 12 include..

• 1,2,3,4,6,12
• 12,24,36,42
• 3,6,9,12
• 12 has no factors

Tags

CCSS.6.NS.B.4

What is the least common multiple (LCM) of 4 and 10?

• 4
• 40
• 15
• 20

Find the LCM of 18 and 24

• 6
• 72
• 24
• 5

What is the least common multiple of 4 and 7? 

• 32
• 24
• 1
• 28

Find the Least Common Multiple (LCM) of 12 & 30

• 30
• 36
• 60
• 90

Tags

CCSS.6.NS.B.4

What is the GCF of 12 and 8?

• 4
• 2
• 6
• 1

What is the GCF of 16 and 10?

• 10
• 16
• 2
• 4