Percents and Percent Proportions

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (in decimal form) and then divide by 100.

Front

What is a percent proportion?

Back

A percent proportion is an equation that shows two ratios are equal, often used to find the percent of a quantity.

Front

Solve the percent proportion: 15 is what percent of 75?

Back

20%

Front

What is a markup?

Back

A markup is the amount added to the cost price of goods to cover overhead and profit.

Front

If a laptop is sold for $1200 after a 20% markup, what is the original price?

Back

$1000

Front

What is a percent decrease?

Back

A percent decrease is a measure of how much a quantity has decreased relative to its original amount, expressed as a percentage.

Front

A shirt originally costs $40, but it is now on sale for $32. What is the percent decrease?

Back

20%

Front

What is a percent increase?

Back

A percent increase is a measure of how much a quantity has increased relative to its original amount, expressed as a percentage.

Front

The population of a city was 500,000 last year. This year, it increased to 550,000. What is the percent increase in population?

Back

10%