Prime Factors Multiples Factor Trees

List the first 5 MULTIPLES of 3

• 3, 6 10, 15, 20
• 1, 3, 2, 6, 4
• 3, 6, 9, 12, 15
• 6, 9, 12, 15, 18

Joe has listed the first 4 multiples of 7 as: 
7   14    22     28
Which one is incorrect?

• 7
• 14
• 22
• 28

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)

Is 2 a prime or composite number?

• Prime
• Composite

Find the PRIME number

• 10
• 9
• 7
• 4

Use a factor tree to find prime factorization of 24.

• 2 x 3 x 2 x 3

• 2 x 3 x 2 x 2

• 6 x 2 x 2

• 2 x 3 x 4

Use a factor tree to find the prime factorization of 50.

• 2 x 2 x 5 x 5

• 5 x 5 x 3 x 2

• 2 x 5 x 5

• 2 x 25

Use a factor tree to find the prime factorization of 54.

• 3 x 3 x 2

• 3 x 3 x 3 x 2

• 3 x 2 x 1 x 3

• 3 x 3 x 1 x 5

Use a factor tree to find the prime factorization of 144.

• 2 x 2 x 3 x 3 x 5

• 2 x 2 x 6 x 2

• 2 x 2 x 3 x 2 x 2 x 3

• 2 x 2 x 2 x 3 x 3

Use a factor tree to find the prime factorization of 72.

• 3 x 3 x 2 x 2 x 2

• 3 x 2 x 2 x 2

• 7 x 3 x 2 x 2

• 7 x 3 x 2