HCF AND LCM

Which method is used to find HCF and LCM?

• Factor tree

• Division method

• Long division

• None of these

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

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)

Which one is a multiple of 4?

• 33
• 22
• 18
• 24

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.6.NS.B.4

Find the HCF of 12 and 15 ?

• 2
• 2 x 3
• 3
• 60

Tags

CCSS.6.NS.B.4

What is the LCM of 6 and 8 ?

• 12
• 18
• 24
• 36

Tags

CCSS.6.NS.B.4

what are the first 5 prime numbers in ascending order?

• 2,3,4,5,11

• 1,2,3,5,11

• 2,3,5,7,11

• 2,3,11,7,5

Which of these numbers is not prime?

• 17

• 25

• 23

• 37

Tags

CCSS.4.OA.B.4