Adding Fractions with Unlike Denominators

The video tutorial explains how to add fractions with unlike denominators. It begins by identifying the need for a common denominator and demonstrates how to find it. The tutorial then shows how to adjust fractions to have the same denominator, allowing them to be added together. Finally, it covers converting improper fractions into mixed numbers, providing a complete understanding of the process.

Why can't fractions with different denominators be added directly?

• Because they are already simplified.

• Because they represent different parts of a whole.

• Because they are improper fractions.

• Because they have the same numerator.

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

• Convert them to decimals.

• Add the numerators directly.

• Find a common denominator.

• Multiply the fractions.

What is the least common denominator of 12 and 4?

• 16

• 4

• 8

• 12

How do you convert 1/4 to have a denominator of 12?

• Subtract 1 from the numerator.

• Multiply both numerator and denominator by 2.

• Add 8 to the denominator.

• Multiply both numerator and denominator by 3.

What is the equivalent fraction of 1/4 with a denominator of 12?

• 2/12

• 4/12

• 3/12

• 5/12

What is the sum of 10/12 and 3/12?

• 12/12

• 15/12

• 13/12

• 14/12

What does it mean when the numerator is larger than the denominator?

• The fraction is improper.

• The fraction is a mixed number.

• The fraction is proper.

• The fraction is simplified.

How many times does 12 fit into 13?

• 3

• 2

• 1

• 0

What is the remainder when 13 is divided by 12?

• 0

• 1

• 3

• 2

What is the mixed number form of 13/12?

• 1 and 1/12

• 1 and 4/12

• 1 and 2/12

• 1 and 3/12