Chapter 1/2 Prime, Composite, LCM, GCF

What makes a number a composite number?

• It only has 2 factors 1 and itself.
• It is an even number.
  It is an odd number.
• Is is an odd number.
• It has more than two factors.

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 its self.
  (1 and itself)

Tags

CCSS.4.OA.B.4

Which list has only prime numbers?

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

Tags

CCSS.4.OA.B.4

Which list is only composite numbers?

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

which number below is NOT prime?

• 7
• 9
• 2
• 3

What are the factors of 8?

• 1, 2, 4, 8
• 1, 8
• 1, 3, 8
• 1, 2, 8

Tags

CCSS.4.OA.B.4

What are the factors of 20?

• 1, 2, 4, 5, 10, 20
• 1, 10, 20
• 1, 2, 10, 4, 20
• 1, 2, 10, 20

Find the GCF of 64 and 144

• 8
• 6
• 16
• 2

Tags

CCSS.6.NS.B.4

What is the GCF of 18 and 24?

• 3

• 6

• 8

• 9

Jane has 18 juice boxes, 24 bags of peanuts and 36 apples.  She wants to make snack bags with the same number of each thing in each bag.  What is the greatest number of snack bags Jane can make.

• 4
• 6
• 8
• 10

Tags

CCSS.6.NS.B.4