Prime and Composite Numbers and Factors

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

Find the prime number

• 10
• 9
• 7
• 4

Which of the following is a factor of 54?

• 4
• 7
• 5
• 9

Which list has only prime numbers?

• 2, 3, 4, 5
• 1, 5, 7, 9
• 2, 3, 5, 7
• 2, 4, 6, 8

Is 3 a factor of 12?

• yes
• no

What do we call the answer to a multiplication question?

• sum
• difference
• quotient
• product

Use a number tree to find the prime factorization of 32

• 2 x 2 x 2 x 4

• 2 x 2 x 2 x 2 x 2

Use a number tree to find the prime factorization of 60

• 5 x 3 x 2 x 2

• 7 x 6 x 5

Which list contains composite numbers?

• 4, 6, 8, 9, 12

• 2, 4, 6, 7, 12