Exploring LCM and GCF Concepts

What does LCM stand for?

• Least Common Multiple

• Largest Common Multiple

• Least Common Multiplier

• Largest Common Multiplier

What operation is used to find the Least Common Multiple?

• Division

• Subtraction

• Addition

• Multiplication

What is the LCM of 5 and 3?

• 10

• 15

• 20

• 25

What is the LCM of 9 and 10?

• 60

• 72

• 45

• 90

What does GCF stand for?

• Greatest Common Formula

• Greatest Common Fraction

• Greatest Common Factor

• Greatest Common Function

What is a prime number?

• A number divisible by 5

• A number divisible by 1 and itself

• A number divisible by 2

• A number divisible by 3

Tags

CCSS.4.OA.B.4

What is the GCF of 50 and 81?

• 2

• None

• 5

• 3

What is the GCF of 45 and 60?

• 9

• 5

• 15

• 3

What is the GCF of 30 and 25?

• 2

• 3

• 5

• 10

What is the first step in finding the GCF using a factor tree?

• Multiply the numbers

• Break down the numbers into their prime factors

• Divide the numbers

• Add the numbers