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 50, calculate 50 * 0.20 = 10.

Front

What is the formula to find what percent one number is of another?

Back

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

Front

If 25% of a number is 10, what is the number?

Back

The number is 40. (10 / 0.25 = 40)

Front

What is 10% of 200?

Back

10% of 200 is 20. (200 * 0.10 = 20)

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number (numerator) by the bottom number (denominator) and multiply by 100.

Front

What is 50% of 80?

Back

50% of 80 is 40. (80 * 0.50 = 40)

Front

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

Back

The number is 50. (15 / 0.30 = 50)

Front

What percent of 60 is 12?

Back

20%. (12 / 60 * 100 = 20%)

Front

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

Back

The sale price is $30. (25% of $40 is $10, so $40 - $10 = $30)