Percent Proportion

Front

What is the definition of 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 x 0.20 = 10.

Front

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

Back

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

Front

What is 20% of 100?

Back

20.

Front

What is 10% of 250?

Back

25.

Front

How do you find what percent one number is of another?

Back

Use the formula: Percent = (Part/Whole) x 100. For example, to find what percent 50 is of 200, calculate (50/200) x 100 = 25%.

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 x 100 = 25%.

Front

If a shirt costs $40 and is on sale for 25% off, how much is the discount?

Back

The discount is $10 (25% of $40).

Front

What is the total cost of a $50 meal with a 15% tip?

Back

The total cost is $57.50 ($50 + $7.50 tip).

Front

What is 40% of 230?

Back

92.