GCF and LCM Review

What is the GCF of 16 and 48?

• 8

• 6

• 16

• 48

The greatest common factor is when the two numbers are multiplied. Ex: 3 * 6 = 18. The GCF of 3 and 6 is 18.

• True
• False

What is the LCM of 8 and 12?

• 12

• 96

• 24

• 48

The LCM is the least number that is a multiple of two numbers. Ex: The LCM of 8 and 16 = 16.

• True
• False

What is a prime number?

• An odd number

• Numbers that have more than 2 factors.

• An even number

• A number greater than one that only has two factors. (1 and itself)

Select the prime number.

• 9

• 15

• 17

• 63

What is the prime factorization of the number 84?

• 2x2x3x7

• 3x4x7

• 2x6x7

• 2x2x3x3x7

What are the strategies for finding the GCF?

• Factor Tree

• Factor List

• Multiple List

• Ladder Method

What are the strategies for finding the LCM?

• Factor Tree

• Prime Factorization

• Multiple List

Is this question asking to find GCF or LCM?

• GCF
• LCM

Tags

CCSS.6.NS.B.4