Division, Divisibility and Prime Factors

Is 17 a prime number? (Yes/No)

• Yes

• Prime

• 15

• No

What is the divisibility rule for 3?

• Multiply the digits of the number and check if the product is divisible by 3.

• Sum the digits of the number and check if the sum is divisible by 3.

• Subtract the digits of the number and check if the result is divisible by 3.

• Check if the number itself is divisible by 3.

Find the prime factors of 24.

• 2, 2, 3, 3

• 2, 4, 6

• 3, 8

• 2, 2, 2, 3

Determine if 45 is divisible by 5. (Yes/No)

• Yes

• Sometimes

• Maybe

• No

What is the smallest prime number?

• 5

• 2

• 1

• 3

Calculate the prime factorization of 36.

• 2x2 x 2x2

• 2x2x2x3x 3

• 3x3x3 x 2

• 2x2x3x3

Identify the prime numbers between 20 and 30.

• 21

• [23, 29]

• 25

• 27

What is the divisibility rule for 9?

• Sum the digits of the number and check if the sum is divisible by 9.

• Multiply the digits of the number and check if the product is divisible by 9.

• Subtract the digits of the number and check if the result is divisible by 9.

• Check if the number itself is divisible by 9.

Find the prime factors of 56.

• [2, 2, 2, 2, 7]

• [2, 2, 4, 7]

• [2, 4, 7]

• [2, 2, 2, 7]

Is 63 divisible by 7? (Yes/No)

• Yes

• 10

• Maybe

• No