3. HCF & LCM / Primes and Factors

A cafe sells different cakes each day. It sells banana cake every 8 days, and raspberry cake every 22 days.

How many days until both cakes are sold on the same day?

• 44 Days

• 56 Days

• 72 Days

• 88 Days

Which one of these numbers is prime?

• 21

• 23

• 25

• 27

Which of these numbers is a factor of 24?

• 5

• 6

• 7

• 9

Which of the following number is a multiple of 9?

• 89

• 109

• 117

• 141

A number is expressed as

2³ x 3³ x 5.

What is the number?

• 11

• 72

• 270

• 1080

Tags

CCSS.4.OA.C.5

How should you express 96 as a product of its prime factors?

• 32 x 3

• 3 x 2⁵

• 2 x 48

• 1 x 2⁵ x 3

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.EE.A.4

What is the LCM of 5, 3 and 2?

• 6

• 10

• 15

• 30

Which number is not a factor of 42?

• 6

• 7

• 8

• 14

What is 36 as the product of prime factors?

• 2 x 18

• 2² x 3²

• 2³ x 3³

• 2 x 3 x 6

What is 720 as a product of its prime factors?

• 2⁴ x 3² x 5

• 16 x 3³ x 5

• 2³ x 4² x 3

• 2⁶ x 7

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3