Divisibility and Prime Factorization

Number 27 is divisible by ?

(Choose ALL the numbers that make it divisible)

• 2

• 3

• 4

• 6

• 9

Number 86 is divisible by ?

(Choose ALL the numbers that make it divisible)

• 2

• 3

• 4

• 6

• 9

Number 348 is divisible by ?

(Choose ALL the numbers that make it divisible)

• 2

• 3

• 4

• 6

• 9

Number 4,090 is divisible by ?

(Choose ALL the numbers that make it divisible)

• 2

• 3

• 4

• 5

• 10

Is 535 divisible by 3?

• Yes

• No

Is 240 divisible by 6?

• Yes

• No

Is 45 divisible by 2?

• Yes

• No

Is 123 divisible by 9?

• Yes

• No

Which of the following numbers is composite?

• 2

• 17

• 51

• 83

Which divisibility rule would you apply to tell whether a number is divisible by 4?

• The last digit is divisible by 4.

• The sum of the digits is divisible by 4.

• The last two digits are divisible by 4.

• The sum of the digits is divisible by 16.