Adding Fractions with Unlike Denominators

This video tutorial explains how to add two fractions with unlike denominators. It begins by finding a common denominator through listing multiples or multiplying the denominators. Then, it demonstrates creating equivalent fractions with the common denominator. Finally, it shows how to add these equivalent fractions by summing the numerators while keeping the denominator constant. The tutorial concludes with a summary of the three-step process: finding a common denominator, generating equivalent fractions, and adding them together.

Why is it necessary to find a common denominator when adding fractions with unlike denominators?

• To convert fractions to decimals

• To make the numerators equal

• To simplify the fractions

• To ensure the fractions have the same base for addition

What is the first step in finding a common denominator?

• Dividing the denominators by each other

• Subtracting the smaller denominator from the larger one

• Listing the multiples of each denominator

• Adding the numerators

Which number is the first common multiple of 3 and 8?

• 12

• 16

• 24

• 32

How do you convert 2/3 to an equivalent fraction with a denominator of 24?

• Multiply the numerator by 3 and the denominator by 8

• Multiply both numerator and denominator by 3

• Multiply both numerator and denominator by 8

• Multiply the numerator by 8 and the denominator by 3

What is the equivalent fraction of 3/8 with a denominator of 24?

• 6/24

• 9/24

• 8/24

• 12/24

After converting to equivalent fractions, what is the next step?

• Multiply the fractions

• Add the numerators

• Subtract the numerators

• Divide the fractions

What is the sum of 16/24 and 9/24?

• 24/24

• 25/24

• 23/24

• 26/24

What is the first step in the three-step process for adding fractions with unlike denominators?

• Find a common numerator

• Find a common denominator

• Add the fractions directly

• Convert fractions to decimals

What is the second step in the three-step process for adding fractions with unlike denominators?

• Convert to equivalent fractions

• Subtract the fractions

• Add the fractions

• Multiply the fractions

What is the final step in the three-step process for adding fractions with unlike denominators?

• Find a new common denominator

• Subtract the fractions

• Convert to decimals

• Add the equivalent fractions