Math 4 Factors, Multiples, Prime , Composite and Prime Factor

What are all the factors of 20?

• 2, 4, 5, 10

• 1, 2, 4, 5, 10, 20

• 2, 10

• 20, 40, 60

Tags

CCSS.4.OA.B.4

What are the first five multiples of 7?

• 1, 7

• 7, 8, 9, 10, 11

• 1, 2, 7, 14

• 7, 14, 21, 28, 35

What is a prime number?

• a number with ONLY two factors

• a number with LESS THAN two factors

• a number with ONLY one factor

• a number with MORE THAN two factors

Tags

CCSS.4.OA.B.4

What is a composite number?

• a number with ONLY TWO factors

• a number with LESS THAN TWO factors

• a number with MORE THAN TWO factors

• a number with ONLY ONE factor

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 choice lists all the factors for the number 24?

• 2, 3, 4, 6, 8, 12, 24
• 2, 3, 4, 6, 8, 12, 24, 36
• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 2, 4, 5, 6, 8, 12 ,24

Tags

CCSS.4.OA.B.4

A prime number...

• has one factor.
• has more than 2 factors.
• has 100 factors.
• has exactly 2 factors: 1 and the itself.

Tags

CCSS.4.OA.B.4

What are the prime factors of 27?

• 3x3x3

• 3x2x3

• 3x3x4

Find the prime factors of 45.

• 5x9

• 3x15

• 3x3x5

What are the prime factors of 90?

• 3x3x4x5

• 5x5x3

• 2x3x3x5