Compound Denominate Numbers: Practical Problems: Multiplying Compound Denominate Numbers
This clip includes practical problems that are solved by multiplying compound denominate numbers. The first of these involves figuring out the area of a rug, followed by a problem about the square footage of an office and the amount of rent due each...
Compound Denominate Numbers: Working With Metric Compound Denominate Numbers
This clip explains how working with metric compound denominate numbers differs from compound denominate numbers in the U.S. Customary System. "In the Metric System, we don't usually see a value like 21 meters 72 centimeters," the clip states. "Inste...
Compound Denominate Numbers: Multiplying Compound Denominate Numbers
This clip explains how to multiply compound denominate numbers. The clip points out that, "
in multiplication, we don't work in columns as we do in addition
and, to multiply, the units must be the same
.(so) we convert both compound denominate nu...
Dividing Signed Numbers: Introduction to Dividing Signed Numbers
This clip explains that the rules for dividing signed numbers are the same as for multiplying signed numbers, "
except, of course, that we divide the absolute values instead of multiplying." When the signs are the same, the quotient is positive. Wh...
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: Division as the Opposite of Multiplication
This clip explains that, "
division of fractions, like division of whole numbers, is expected to work as the opposite of multiplication." The clip then provides examples of how it does so, adding that the relationship between division and multiplic...
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: Multiplying By the Reciprocal
This clip explains that dividing by any number is the same as multiplying by its reciprocal.
Dividing Decimal Fractions: Placing the Decimal Point in the Quotient
This clip reviews the concept of changing divisors that are decimals into whole numbers. The clip then poses the following question: "(Once that's done) where do we put the decimal point of the answer, the quotient?" The clip then explains that "
t...