The Meaning of Percentage: Very Small Percentages
This clip explains how to deal with very small percents, such as those less than 1 percent. As an example, it uses one-fourth percent, which it states is one quarter of 1%. The clip then goes through the steps necessary to express that in decimal fo...
Two Approaches for Dividing Radicals
Two approaches to simplifying radical expressions using division when the radical in the numerator and the radical in the denominator are perfect squares. Another guideline for simplifying radicals is introduced: all fractions must be reduced to low...
Solving an Equation by Subtracting
An explanation of how to solve an algebraic equation by dividing.
Radicand Divided by Another Radicand, A
Simplifying a radical expression by dividing the radical in the numerator by the radical in the denominator.
Negative Exponents: Division Involving Negative Exponents
This clip explains that, when it comes to division involving negative exponents, if the bases are the same, we just subtract exponents. The clip illustrates this rule with a number of examples including 4 to the power of 9 divided by 4 to the power ...
Metric System, The: Converting Metric Units: Unit Cancellation and Moving Decimals
This clip explains how to convert metric units using the unit cancellation method, which uses unit equivalences and conversion factors. The clip also points out that moving decimal points is a simple way to convert between metric units, although som...
Metric System, The: Practical Problems in Converting Metric Units
This clip explains how to solve unit conversion problems using the decimal method and the unit cancellation method. Following the final problem, the clip explains that, "Â…both methods of converting centimeters to meters give us the same answer. So ...
Summary of the Order of Operations and Use of Parentheses in Algebra
The standard order of operations and the use of parentheses in Algebra are summarized.
Metric System, The: Unit Conversion: Mass
This clip explains how to convert metric units of mass by marking the decimal and then moving it, using the larger left rule in one case, and the smaller right rule in another.
Four Basic Tactics for Equations
A summary of the four basic tactics for solving equations.