Quiz 3 GCF and LCM

A prime number is...

• a number that has only one factor.
• a number that has at least two factors.
• a number that has more than two factors.
• a number that has only two factors.
  (1 and itself)

Which number is NOT prime?

• 3
• 7
• 17
• 21

What are the prime factors of 27?

• 3x3x3

• 3x2x3

• 3x3x4

Which number is not a factor of 24?

• 6
• 8
• 3
• 14

Find the prime factorization of 56.

• 2x2x2x7

• 2x28

• 3x3x7

The prime factors of 70 are?

• 3 x 5 x 7

• 5 x 7 x 7

• 2 x 5 x 7

Find ALL FACTORS of 24

• 1, 2, 12, 24

• 1, 2, 8, 24

• 1, 2, 3, 4, 5, 6, 8, 12, 24

• 1, 2, 3, 4, 6, 8, 12, 24

What is the greatest common factor of 30 and 36?

• 6

• 8

• 4

• 3

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

• 1
• 2
• 4
• 32

Sarah has 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 she can make?

• 6

• 48

• 8

• 64