Finding GCF and Reducing Fractions

The video tutorial on KMath TV explains how to reduce fractions to their lowest terms by finding the greatest common factor (GCF) of the numerator and denominator. It covers four examples: reducing 9/12, 10/20, 8/10, and 12/18 using methods like prime factorization and continuous division. The tutorial emphasizes the importance of identifying common prime factors to simplify fractions effectively.

What is the first step in reducing a fraction to its lowest terms?

• Multiply the numerator and denominator by the same number.

• Add the numerator and denominator.

• Divide the numerator and denominator by their GCF.

• Subtract the numerator from the denominator.

Which of the following is NOT a method to find the GCF?

• Prime factorization

• Listing method

• Continuous division

• Subtraction method

What are the prime factors of 9?

• 2 and 3

• 3 and 3

• 2 and 6

• 3 and 6

What is the GCF of 9 and 12?

• 6

• 3

• 9

• 2

After finding the GCF of 9 and 12, what is the reduced form of the fraction 9/12?

• 3/4

• 2/3

• 1/2

• 3/2

Which prime number can divide both 10 and 20?

• 5

• 3

• 2

• 7

What is the GCF of 10 and 20 using continuous division?

• 20

• 10

• 5

• 2

What is the reduced form of the fraction 10/20?

• 3/4

• 2/3

• 5/10

• 1/2

Which prime number can divide both 8 and 10?

• 7

• 5

• 3

• 2

What is the GCF of 8 and 10?

• 10

• 5

• 4

• 2