Multiplying Fractions: Multiplying Fractions and Canceling
This clip explains that, "
.when we multiply together two or more fractions, and the same number appears in a numerator and a denominator
we are allowed to divide through or 'cancel' in both places." The clip concludes by stating that, "
if you d...
Measurement and Unit Conversion: Unit Conversion Factors of Time: Hours, Minutes and Seconds
This clip presents unit conversion problems involving sleep that can be solved by utilizing unit equivalences for seconds to minutes and minutes to hours, and then either multiplying or dividing.
Signed Fractions: Dividing Signed Fractions
This clip explains that, when dividing signed fractions, the basic approach is the same as any operation with signed fractions. Once we figure out what's being divided into what, we divide the absolute values. And, in this instance, because the prob...
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: Dividing Compound Denominate Numbers
This clip explains how to divide compound denominate numbers, noting that the first step is to convert the numbers to a single unit. The clip includes practical problems in which the student is asked to figure out how many chassis parts can be assem...
Multiplying Fractions: Summary: Multiplying Fractions
This clip summarizes multiplying fractions, touching on a number of the main rules that apply, revisiting the value of dividing through (or "canceling"), and finally discussing the conversion of mixed numbers to imperfect fractions and back again.