Negative Exponents: Multiplication Involving Negative Exponents
This clip explains negative exponents and how to deal with them. "Think of the whole business as a fraction with a denominator of 1," the clip states. "Then, to change the sign of the exponent, just invert the fraction." The clip notes that, "
this...
Negative Exponents: Summary: Negative Exponents
This clip summarizes the lesson on negative exponents. It explains that when we say 4 to the power of negative 2, it means 1 over 4 to the power of 2. "If we think of the original number as a fraction with a denominator of 1," the clip states, "...w...
Dividing Fractions: To Divide Fractions: Invert and Multiply
This clip presents the dividing fractions rule of "invert and multiply," explaining that the divisor is inverted and the dividend is multiplied. "Invert means the numerator and the denominator change places," the clip states. The clip also asks and ...
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: 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: Reciprocals
This clip explains that the reciprocal is the fraction that results when the original fraction is inverted.