Finding Factors and Gcf

Find the Greatest Common Factor (GCF) OF 12,  18 & 30

• 1

• 3

• 6

• 12

Find the Greatest Common Factor (GCF) of 60 and 75

• 1

• 3

• 5

• 15

What is a factor?

• numbers we can multiply together to get another number

• the total amount resulting from the addition of two or more numbers, amounts, or items

• the action of separating something into parts or the process of being separated

• a number that is expressed as the ratio of two integers, where the denominator should not be equal to zero

Tags

CCSS.4.OA.B.4

Based on the image, what is the GCF of 36 and 120?

• 223

• 7

• 12

• 360

Based on the image, what is the GCF of 24 & 60?

• 2, 2, 3, 2, 5

• 20

• 120

• 12

Which information is being discovered from the ladder method?

• The Simplified Ratio

• The Least Common Multiple

• The Greatest Common Factor

• The Equivalent Fraction Multipliers

Once all the common factors have been divided out using the ladder method, how do you find the Greatest Common Factor?

• Multiply all the common factors from the left side of the ladder.

• Multiply all the numbers on the outside of the ladder.

• Use the numbers at the bottom of the ladder.

• Switch the numbers at the bottom of the ladder.

GCF stands for...

• great calculator festival

• giant circumference fact

• grouped calculation finder

• greatest common factor

Based on the image, what is the LCM of 36 & 120?

• 223

• 7

• 12

• 360

Based on the image, what statement is true for finding GCF?

• The GCF is always right ... I say it every night.

• The GCF is on the left.

• The LCM is all of them.

• LCM stands for lost crazed monkeys!