HCF and LCM

HCF and LCM

by Ms. Knowles

Multiple Choice

Which shows the prime factorization of 84?

• $$2\times2\times3\times7$$

• $$2\times2\times3\times3\times7$$

• $$4\times21$$

• $$7\times21$$

Multiple Choice

Find the prime factorization of 40

• 2 x 5 x 2
• 2 x 20
• 5 x 8
• 2 x 2 x 2 x 5

Multiple Choice

What is the HCF of the numbers represented by the following prime factorizations?

2 x 3

2 x 2 x 2

• 2

• 2 x 2

• 2 x 2 x 2

• 2 x 3

Multiple Choice

What is the HCF of the numbers represented by the following prime factorizations?

2 x 3

2 x 2 x 3

• 2

• 2 x 2

• 2 x 2 x 2

• 2 x 3

Multiple Choice

What is the HCF of the numbers represented by the following prime factorizations?

2 x 2 x 2

2 x 2 x 3

• 2

• 2 x 2

• 2 x 2 x 2

• 2 x 3

Multiple Choice

What is the HCF of the numbers represented by the following prime factorizations?

2 x 3

2 x 5

• 2

• 2 x 2

• 2 x 2 x 2

• 2 x 3

Multiple Choice

What is the LCM of the numbers represented by the following prime factorizations?

2 x 3

2 x 2 x 2

• 2 x 2 x 2 x 2 x 3

• 2 x 2 x 3

• 2 x 2 x 2 x 3

• 2 x 3

Multiple Choice

What is the LCM of the numbers represented by the following prime factorizations?

2 x 3

2 x 2 x 3

• 2 x 2 x 3

• 2 x 2 x 2 x 3

• 2 x 2 x 2

• 2 x 3

Multiple Choice

What is the LCM of the numbers represented by the following prime factorizations?

2 x 3

2 x 5

• 2 x 3 x 5

• 2 x 2 x 3 x 5

• 2

• 3 x 5

Multiple Choice

What is the LCM of the numbers represented by the following prime factorizations?

2 x 2 x 2

2 x 2 x 3

• 2 x 3

• 2 x 2 x 3

• 2 x 2 x 2 x 3

• 2 x 2 x 2 x 2 x 3

Multiple Choice

What is the HCF of the numbers represented by the following prime factorizations?Ans ___

2 x 5

3 x 5

• 5

• 10

• 15

• 30

Multiple Choice

What is the LCM of the numbers represented by the following prime factorizations?Ans ___

2 x 5

3 x 5

• 5

• 10

• 30

• 150