Q:
# How Do You Do Percentages in Math?

Percent means “for every 100” or “out of 100.” If 80 percent of the population owns a computer, this implies that 80 out of every 100 people have one. The symbol “%” means percent. Writing a percentage therefore means representing the number out of 100. For instance, finding what percent of 20 is 40: (40/20) * 100 = 200%

Continue ReadingIn frequent percentage cases, “of” is given to indicate “times.” If you need to find 20% of 1600, you first convert the percentage “20%” to its decimal form, which is 0.2. Then, since “20 percent of 1600” tells you to multiply the 0.2 and the 1600, you get: (0.2) (1600) = 320.

A percentage is a fraction of 100. For instance:

40% (40 in each 100) as a fraction is 40/100.

40% as a decimal is 0.4.

In calculating percentages, two values are provided, or at least enough information to figure them out. You are required to select a variable for the missing value, write an equation and solve for the variable. In real-life situations, people are often required to find a percentage of a quantity. In such cases, the percentage is first written as a fraction or decimal and then multiplied by the quantity. For instance:

50% of $50

50% as a fraction is 50/100 = 0.5

0.5 * $50 = $25

Learn more about Fractions & Percentages-
Q:
## How Do You Work Out Percentages Without a Calculator?

A: A calculator is always helpful when determining percentages, but you can easily compute percentages without a calculator. A pencil and paper might be helpf... Full Answer >Filed Under: -
Q:
## What Is the Formula for Calculating Percentages?

A: Calculating percentages is found by dividing the part by the whole and multiplying the result by 100. For example, 17 is what percent of 68 can be found by... Full Answer >Filed Under: -
Q:
## How Do I Calculate Percentages?

A: Calculating percentages is a key concept in mathematics. Percentage calculations are important in all forms of mathematics including algebra, geometry and ... Full Answer >Filed Under: -
Q:
## Who Invented Percentages?

A: No one person invented percentages. The concept developed throughout history. In Ancient Rome mathematical computation were expressed in fractions of 100. ... Full Answer >Filed Under: