Adding and Subtracting Fractions-Butterfly Method

What is the Butterfly Method used for?

• To add and subtract fractions with unlike denominators.

• To multiply fractions with like denominators.

• To convert improper fractions to mixed numbers.

• To find the least common multiple of two numbers.

What is the number on the top of a fraction called?

• Denominator

• Numerator

• Fractional part

• Whole number

What do you do after cross-multiplying in the Butterfly Method?

• Add or subtract the cross products.

• Multiply the denominators together.

• Divide the cross products by the denominators.

• Subtract the numerators from each other.

What is the number on the bottom of a fraction called?

• Numerator

• Denominator

• Fractional part

• Whole number

What is a common denominator?

• A number that is a multiple of the denominators of the fractions being added or subtracted.

• A number that is the sum of the denominators of the fractions.

• A number that is the product of the denominators of the fractions.

• A number that is the smallest denominator among the fractions.

If the denominators are 3 and 4, what is a common denominator?

• 6

• 8

• 12

• 10

What do you need to find before adding or subtracting fractions?

• A common denominator.

• A common numerator.

• The least common multiple.

• The greatest common factor.

What is the result of @@\frac{2}{5} + \frac{1}{10}@@?

• @@\frac{1}{2}@@

• @@\frac{3}{10}@@

• @@\frac{5}{10}@@

• @@\frac{4}{10}@@

How do you add fractions using the Butterfly Method?

• Cross-multiply the numerators and denominators, then add the results.

• Add the numerators and denominators separately.

• Multiply the denominators and keep the numerators the same.

• Subtract the smaller numerator from the larger one.

How do you subtract fractions using the Butterfly Method?

• Cross-multiply the numerators and denominators, then subtract the results.

• Add the numerators and denominators directly.

• Multiply the denominators and add the numerators.

• Subtract the numerators and multiply the denominators.