Factors, Divisibility Rules and Multiples

What is the divisibility rule for 1

• It has to be an even number

• Every number is divisible by 1

• Add up all of the digits and if it is divisible by 1 then the whole number is.

A number is _____________ by another number if you can divide it and you are left with no remainder.

• answerable

• divisible

• factorable

• remainder

A number with more than two factors is categorized as ____________________.

• prime

• composite

• compound

• factorable

What is the rule for divisibility by 3?

• the sum of the digits is divisible by 2

• the digits product is 3

• the sum of the digits is divisible by 3

• the digits add up to 3

What is the HCF(6, 9)

• 1

• 3

• 6

• 9

What is the HCF(8, 16)

• 2

• 4

• 8

• 16

A number with only 2 factors, 1 and itself, is categorized as ______________.

• composite

• divisible

• factors

• prime

Any even number (ending in 0,2,4,6,8) is divisible by what divisor?

• 3

• 9

• 2

• 5

Numbers are divisible by four if their last two digits are.....

• equal to 3

• 21

• divisible by 4

• odd

A number is divisible by 5 if it ends in ______________________.

• 1 or 2

• 0 or 5

• 9 or 7

• only 5