How to find the sum of two fractions with unlike denominators

The video tutorial covers the process of adding fractions with unlike denominators. It begins with an introduction to the concept and explains the importance of finding the least common denominator (LCD). The instructor provides examples to illustrate how to calculate the LCD and create equivalent fractions. The lesson concludes with a final calculation, demonstrating the addition of fractions using the LCD.

What is the first step in adding fractions with different denominators?

• Add the numerators directly

• Find a common denominator

• Subtract the smaller denominator from the larger one

• Multiply the fractions

Which of the following is true about the Least Common Denominator (LCD)?

• It is the smallest number that both denominators divide into

• It is the sum of the two denominators

• It is always the product of the two denominators

• It is always larger than both denominators

If the denominators are 9 and 3, what is the LCD?

• 27

• 12

• 9

• 6

How do you ensure that the value of a fraction remains unchanged when adjusting its denominator?

• Subtract the same number from both the numerator and denominator

• Only multiply the denominator

• Multiply both the numerator and denominator by the same number

• Add the same number to both the numerator and denominator

What is the result of adding fractions once they have a common denominator?

• Subtract the numerators

• Divide the numerators

• Multiply the numerators

• Add the numerators