Factors and Multiples Presentation

Multiple Choice

Which of the following is a prime factor of 30?

• 6

• 10

• 2

• 15

Multiple Select

Select all numbers whose prime factors include 3.

• 22

• 50

• 63

• 42

Multiple Choice

Which of the following numbers has the prime factors 2 and 11?

• 22

• 50

• 63

• 42

Multiple Choice

What is the prime factorization of 27?

• 3 x 3 x 3

• 3 x 9

• 9 x 3

• 27 x 1

Multiple Choice

Show that 61 is a prime number.

• 61 is a prime number because it has no divisors other than 1 and itself.
• 61 is a prime factor because it other number can go in it

• 61 is not a prime factor

• 61 is not a prime number

Multiple Choice

What is the Least Common Multiple (LCM) of 2 and 3?

• 6

• 12

• 3

• 2

Multiple Choice

Which of the following is the correct Least Common Multiple (LCM) of 22, 30, and 40 as shown in the alternative method?

• 660

• 1320

• 220

• 2640

Multiple Choice

Which of the following statements is true about the Highest Common Factor (HCF) of 28 and 42?

• HCF is the smallest number dividing both 28 and 42

• HCF is the greatest number dividing both 28 and 42

• HCF is the product of 28 and 42

• HCF is always 1

Multiple Choice

What are the common prime factors used to find the HCF of 504 and 588 in the example?

• 2, 3, 7

• 2, 3, 5

• 3, 7, 11

• 2, 5, 7

Multiple Choice

Which of the following numbers is divisible by both 2 and 4?

• 136

• 4,881

• 372

• 62,784

Multiple Select

Select all the numbers that are perfect squares.

• 9

• 25

• 540

• 9216

Multiple Choice

What are the prime factors of 30?

• 2, 3, 5

• 1, 2, 3, 5, 6, 10, 15, 30

• 2, 5, 6

• 3, 5, 10