Factors, multiples, HCF and LCM

Which is a factor of 15?

• 2
• 3
• 4
• 6

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

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

Joe has listed the first 4 multiples of 7 as: 
7   14    22     28
Which one is incorrect?

• 7
• 14
• 22
• 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

Which answer lists all the factors for 40?

• 1,2,4,5,8,12,14,40

• 1,2,3,4,5,8,10

• 1,2,4,5,8,10,20,40

• 1,2,4,5,6,7,8,9,10

Tags

CCSS.4.OA.B.4

What are the factors of 25?

• 1,2,5,10

• 1,2,5,25

• 1,5,25

• 3,5,15,25

The 8th multiples for 64 is...

• 132

• 220

• 512

• 640

This number is a factor of all the numbers

• 0

• 1

• number itself

• 2