Percent Proportions Review #2

Front

What is a percent?

Back

A percent is a ratio expressed as a fraction of 100. It represents how much of something there is out of a total.

Front

How do you calculate the percent of a part compared to a whole?

Back

To calculate the percent, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100.

Front

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

Back

To find the whole, divide the part by the percent (in decimal form). Formula: Whole = Part / (Percent/100).

Front

If 40% of a number is 60, what is the number?

Back

The number is 150. (60 / 0.40 = 150)

Front

What does it mean if 80% of a class passed a test?

Back

It means that 80 out of every 100 students in the class scored above the passing mark.

Front

How do you find the percent of a number?

Back

To find the percent of a number, multiply the number by the percent (in decimal form). Formula: Percent of Number = Number x (Percent/100).

Front

What is the relationship between fractions and percents?

Back

Fractions can be converted to percents by multiplying the fraction by 100. For example, 1/4 = 0.25 = 25%.

Front

If a store has a 25% discount on a $200 item, how much do you save?

Back

You save $50. (200 x 0.25 = 50)

Front

What percent of 250 is 25?

Back

10%. (25/250 x 100 = 10)

Front

How do you express 3 out of 20 as a percent?

Back

To express it as a percent, divide 3 by 20 and multiply by 100. (3/20 x 100 = 15%)