Revision factors, multiples, primes

Which is not a factor of 24?

• 2

• 3

• 4

• 5

Tags

CCSS.4.OA.B.4

The factors of 16 are 1, 2, 4, 8, 16

While the factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24

What are the Common Factors?

• 1,2,3,4,5

• 1,2,4,6,8

• 12,3,4,6,8,12,16,24

Tags

CCSS.4.OA.B.4

Which number is a factor of 18, but not a multiple of 2?

• 36

• 9

• 8

• 24

Tags

CCSS.4.OA.B.4

Which number is NOT prime?

• 3
• 7
• 17
• 21

Tags

CCSS.4.OA.B.4

Which shows ALL of the factors of 14?

• 1, 14
• 2, 7
• 1, 2, 7, 14
• 1, 28

Tags

CCSS.4.OA.B.4

Find the HCF of 21 and 28

• 3
• 4
• 7
• 14

Tags

CCSS.6.NS.B.4

What is the LCM of 4 and 12? 

• 4
• 8
• 12
• 16

Tags

CCSS.4.OA.B.4

Find the HCF of 40 and 60?

• 10
• 20
• 30
• None of the above

Tags

CCSS.6.NS.B.4

Which of the following shows the prime factorization of 24?

• 2 × 2 × 2 × 3 × 3

• 2 × 2 × 2 × 3

• 2 × 2 × 2 × 2 × 3

• 2 × 2 × 3 × 3

Which of the following shows the prime factorization of 27?

• 2 x 2 x 3

• 2 x 3 x 5

• 3 x 3 x 3

• 2 x 3 x 3