Adding Fractions with Unlike Denominators

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

• To ensure the fractions have the same base for addition

• To convert fractions into whole numbers

• To simplify the fractions

• To make the numerators equal

What is the first step in adding the fractions 2/3 and 1/4?

• Add the numerators directly

• Multiply the numerators by each other

• Find a common denominator

• Subtract the smaller fraction from the larger one

After finding a common denominator for 2/3 and 1/4, what is the next step?

• Multiply the denominators

• Add the numerators

• Subtract the numerators

• Divide the numerators

In the example of adding 1/5 and 2/7, what is the common denominator used?

• 12

• 35

• 7

• 5

Why is it important to simplify the result after adding fractions?

• To make the fraction easier to understand

• To ensure the fraction is in its simplest form

• To change the fraction into a decimal

• To convert the fraction into a percentage