Subtracting Fractions Using the Butterfly Method

What is the first step in the butterfly method for subtracting fractions?

• Subtract the denominators

• Multiply the denominators

• Add the numerators

• Multiply the diagonals

In the first example, what is the result of multiplying 4 and 7?

• 35

• 28

• 10

• 18

During the second example, what is the result of subtracting 16 from 45?

• 33

• 29

• 31

• 27

What is the final result of the second example in the butterfly method?

• 10/35

• 18/35

• 29/72

• 45/72

Which diagonal should you start with when using the butterfly method?

• The one that results in a negative product

• The one that results in a positive product

• The one with the smaller numbers

• The one with the larger numbers