Adding Fractions with Different Denominators

This video tutorial from Mumo Math and Science explains how to add three fractions with different denominators. It covers finding a common denominator using two techniques: listing factors and creating factor trees. The video then demonstrates how to rename fractions with the common denominator, add them, and simplify the result. Two example problems are solved to illustrate the process. The tutorial concludes with a motivational message about kindness.

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

• Find a common numerator

• Subtract the fractions

• Find a common denominator

• Multiply the fractions

Which of the following is a method to find a common denominator?

• Multiplying the numerators

• Adding the numerators

• Listing factors

• Subtracting the denominators

What is the least common multiple of 10, 20, and 30?

• 40

• 10

• 30

• 20

What is the purpose of creating a factor tree?

• To find the least common multiple

• To multiply fractions

• To find the greatest common factor

• To simplify fractions

How do you rename a fraction using the common denominator?

• Add the numerator to the common denominator

• Divide the denominator into the common denominator and multiply by the numerator

• Divide the numerator by the common denominator

• Multiply the numerator by the common denominator

What is the result of adding 18/30, 10/30, and 12/30?

• 30/30

• 60/30

• 40/30

• 50/30

What is the simplified form of 40/30?

• 2/3

• 4/3

• 1/3

• 3/4

In the second example, what is the common denominator for 5, 2, and 4?

• 10

• 25

• 15

• 20

What is the simplified form of 36/20?

• 7/5

• 9/5

• 6/5

• 8/5

What is the mixed fraction form of 9/5?

• 1 and 3/5

• 1 and 2/5

• 1 and 1/5

• 1 and 4/5