Percent Proportions Flashcard

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 50, calculate 50 * 0.20 = 10.

Front

What is the formula for finding the percent of a number?

Back

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

Front

What is 50% of 200?

Back

100

Front

What is 25% of 80?

Back

20

Front

If 30% of a number is 15, what is the number?

Back

50 (because 15 is 30% of 50).

Front

What is the relationship between fractions and percentages?

Back

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

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 75% = 0.75.

Front

What is 10% of 150?

Back

15

Front

If a shirt costs $40 and is on sale for 25% off, what is the sale price?

Back

$30 (because 25% of $40 is $10, and $40 - $10 = $30).