Dividing Fractions: Why Does Invert and Multiply Work?
This clip takes the viewer on what it calls a "reason-by-reason, step-by-step...side trip" into why the "invert and multiply" rule works. The clip states that it's not absolutely necessary to take this side trip, and that "
as long as you remember ...
Dividing Fractions: Rule For Dividing Fractions, A
This clip puts the rule for dividing fractions known as "invert and multiply" to the test. "To divide one fraction by another," the clip states, "multiply the first fraction--the dividend--by the reciprocal of the second fraction--the divisor."
Dividing Fractions: Summary: Dividing Fractions
This clip summarizes dividing fractions, comparing it to the division of whole numbers, and examining the "invert and multiply" rule for dividing one fraction by another.
Dividing Fractions: Multiplying By the Reciprocal
This clip explains that dividing by any number is the same as multiplying by its reciprocal.
Dividing Fractions: Reciprocals
This clip explains that the reciprocal is the fraction that results when the original fraction is inverted.