Finding the Greatest Common Factor

The video tutorial explains how to find the greatest common factor (GCF) using the ladder method. It provides a detailed explanation of the method and demonstrates it with two examples: finding the GCF of 40 and 48, and 10 and 45. The tutorial emphasizes the importance of identifying the largest number that can divide both numbers and illustrates the process step-by-step.

What is the purpose of finding the greatest common factor?

• To find the largest number that divides two numbers

• To find the sum of two numbers

• To find the smallest number that divides two numbers

• To find the average of two numbers

Which method is used to find the GCF in the video?

• Prime Factorization

• Ladder Method

• Division Method

• Subtraction Method

What is the first step in the ladder method for finding the GCF of 40 and 48?

• Divide both numbers by 4

• Divide both numbers by 2

• Divide both numbers by 5

• Divide both numbers by 3

After dividing 40 and 48 by 2 three times, what are the resulting numbers?

• 15 and 18

• 20 and 24

• 10 and 12

• 5 and 6

How do you calculate the GCF after using the ladder method?

• Subtract all the side numbers

• Add all the side numbers

• Divide all the side numbers

• Multiply all the side numbers

What is the GCF of 40 and 48?

• 6

• 8

• 4

• 10

Which number cannot divide both 10 and 45 in the ladder method?

• 7

• 5

• 2

• 3

What is the GCF of 10 and 45?

• 5

• 2

• 3

• 10

Which number is used to divide both 10 and 45 in the ladder method?

• 7

• 3

• 5

• 2