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...
More Problems in Percent: Finding Percents of Unknown Numbers
This clip builds on the role of proportion in solving percent problems, but introduces complications that add steps and make it more difficult to set up the necessary proportions.
More Problems in Percent: Summary: More Problems in Percent
This clip summarizes the "More Problems in Percent" lesson. It reviews the importance of setting up a proportion when starting any problem about percent. It also notes that, "
as a rule, when we figure the percent of increase or decrease, we figure...
More Problems in Percent: Problem Involving Interest, A
This clip explains how to figure out the monthly interest due on a loan.
More Problems in Percent: Percent and Proportion
This clip reviews the role that proportion plays in solving problems involving percent. "Once we have the proportion," the clip notes, "
solving (the problem) is easy."
More Problems in Percent: Percents in Steps
This clip uses a problem about a growing colony of foxes to demonstrates how an increase in the fox population over time affects the way the proportion must be set up.
The Meaning of Percentage: Percentage Provides An Easy Way to Compare Fractions
This clip explains that using percent to express values provides an easy means by which to compare fractions. The clip notes that, since there's a common denominator of 100, all that's needed to compare fractions expressed as a percent is to compare...
The Meaning of Percentage: Comparing Percentages
This clip provides examples which illustrate the fact that, while percents "have no great mathematical importance, they're just very handy from a practical point of view."
The Meaning of Percentage: Decimals, Percents and Fractions
This clip explains that decimals can be changed to percents by moving the decimal point all the way to the far right and adding the percent sign. "Changing percent to decimals is just the reverse," the clip adds. "We drop the percent sign, put in a ...
The Meaning of Percentage: Summary: The Meaning of Percentage
This clip summarizes the key points about percentage, stressing at the outset that it's practical to be able to view all fractions with the same denominator. The clip then talks about the different ways we can express the same value in decimal, frac...