LCM AND HCF

Write all the prime numbers less than 30.

Which number is a factor of 10

• 3

• 4

• 5

• 8

Tags

CCSS.4.OA.B.4

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 itself)

Tags

CCSS.4.OA.B.4

Find two pairs of twin prime numbers less than 50

Find all the factors of 75.

Write 36 as the product of it's prime factors...

• 2 x 2 x 3 x 3

• 2 x 2 x 2 x 3

• 2² x 3²

• 2² x 3

Tags

CCSS.6.EE.A.1

CCSS.6.EE.A.3

CCSS.6.EE.A.4

A common factor of two integers is always a ____________ of their HCF.

• multiple

• factor

• (no answer)

A common multiple of two integers is always a ____________ of their LCM.

• multiple

• factor

• (no answer)

What is the greatest common factor of 24 and 36?

• 2

• 3

• 12

• 24

Tags

CCSS.4.OA.B.4

List the first 5 multiples of 3

• 3, 6 10, 15, 20
• 1, 3
• 3, 6, 9, 12, 15
• 6, 9, 12, 15, 18

Tags

CCSS.3.OA.C.7

CCSS.3.OA.D.9