HCF,LCM,Multiples and Factors

What are multiples

• Multiples are only even numbers

• Multiples are finite

• Multiples are really just extended times tables

• Multiples are infinite

What are factors

• • A factor is an integer that divides exactly into a selected whole number with no remainder.

• Factors are just multiples

• Factors are infinite

Which of the following statement is wrong about factors?

• • The product of each factor pair is equal to the number.

• • A factor is an integer that divides exactly into a selected whole number with no remainder.

• • The product of each factor pair is equal to the number.

• Factors can be sometimes finite or infinite

HCF stands for.

(a)  

Factors of 40 are

• 5,6,8,2,0

• 1,2,4,5,8,10,20,40

• 0,1,40,10,20,5,2

• 8,10,40

What is the HCF of 13,3

• 41

• 0

• 39

• 26

First 5 multiples of 72

• 72, 144, 216, 288, and 360

• 72,144,217,269,340

• 72,160,232,300,372

LCM of 13,7

• 88

• 99

• 96

• 91

HCF of 28 and 7

• 21

• 36

• 28

• 23

What is the HCF of 18 and 27?

• 9

• 6

• 3

• 12