Learn how to add two fractions with unlike denominators

The video tutorial addresses the challenges of adding and subtracting fractions, emphasizing the importance of finding the least common denominator (LCD). It explains how to convert fractions to have a common denominator by multiplying both the numerator and denominator by the same number. The tutorial also highlights common mistakes students make, such as not maintaining equivalent fractions, and demonstrates solving a fraction addition problem using the LCD.

What is often considered the most challenging aspect of working with fractions?

• Multiplying fractions

• Dividing fractions

• Adding and subtracting fractions

• Finding the greatest common factor

What is the least common denominator for the fractions with denominators 3 and 5?

• 15

• 25

• 10

• 20

To convert a fraction with a denominator of 5 to have a denominator of 15, what should you multiply by?

• 2/2

• 3/3

• 4/4

• 5/5

What is a common mistake students make when working with fractions?

• Not multiplying the numerator and denominator by the same number

• Not subtracting the denominators

• Not finding the least common denominator

• Not adding the numerators

After finding a common denominator, what is the next step in adding fractions?

• Divide the numerators

• Subtract the numerators

• Add the numerators

• Multiply the numerators