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 a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 75, calculate 75 * 0.20 = 15.

Front

What is the formula to find the part when given the whole and the percent?

Back

The formula is: Part = (Percent / 100) * Whole.

Front

If 25% of a class of 28 students are home sick, how many students are sick?

Back

7 students.

Front

What percent of 30 cars finished a race if 12 finished?

Back

40%.

Front

What is 20% of 75?

Back

15.

Front

If 26 is 5% of a number, how do you find that number?

Back

Use the formula: Number = Part / (Percent / 100). So, Number = 26 / (5 / 100) = 520.

Front

What is the ratio used to find percent?

Back

part/whole = %/100.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.

Front

What is the relationship between percent, part, and whole?

Back

Percent is the part divided by the whole, multiplied by 100.