Comparing Fractions and Multiplication

The video tutorial explains how to compare improper fractions using cross multiplication. It begins with a simple method for fractions with the same denominator and introduces cross multiplication for fractions with different denominators. The tutorial includes four examples demonstrating the process step-by-step. Viewers are encouraged to practice with a given problem and are directed to additional resources for further learning.

What is the first step in comparing improper fractions with the same denominator?

• Use cross multiplication.

• Compare the denominators.

• Convert to mixed numbers.

• Compare the numerators.

What method is used to compare improper fractions with different denominators?

• Finding a common denominator.

• Using a calculator.

• Converting to decimals.

• Cross multiplication.

In the first example, what is the result of multiplying 72 by 2?

• 72

• 152

• 144

• 38

In the first example, what is the result of multiplying 4 by 38?

• 144

• 76

• 38

• 152

What is the result of comparing 72/4 and 38/2 using cross multiplication?

• 72/4 is less than 38/2

• 72/4 is greater than 38/2

• Cannot be determined

• 72/4 is equal to 38/2

In the second example, what is the result of multiplying 16 by 5?

• 75

• 60

• 80

• 100

In the second example, what is the result of multiplying 3 by 20?

• 100

• 40

• 80

• 60

What is the result of comparing 16/3 and 20/5 using cross multiplication?

• 16/3 is greater than 20/5

• 16/3 is less than 20/5

• 16/3 is equal to 20/5

• Cannot be determined

In the third example, what is the result of multiplying 18 by 3?

• 54

• 72

• 48

• 36

In the third example, what is the result of multiplying 2 by 24?

• 36

• 48

• 72

• 54