Calculating Percents

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 percent of a number?

Back

To calculate a percent of a number, multiply the number by the percent (in decimal form). For example, to find 20% of 30, calculate 30 x 0.20 = 6.

Front

What is the formula for calculating the discount price?

Back

Discount Price = Original Price - (Original Price x Discount Rate).

Front

If an item costs $50 and has a 10% discount, what is the discount amount?

Back

The discount amount is $5. (50 x 0.10 = 5).

Front

How do you find the final price after a discount?

Back

Final Price = Original Price - Discount Amount.

Front

What is the formula for calculating percent increase?

Back

Percent Increase = ((New Value - Original Value) / Original Value) x 100.

Front

If a price increases from $20 to $30, what is the percent increase?

Back

The percent increase is 50%. ((30 - 20) / 20) x 100 = 50.

Front

What does it mean to find 65% of a quantity?

Back

Finding 65% of a quantity means calculating 65 out of every 100 parts of that quantity.

Front

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

Back

The sale price is $30. (40 - (40 x 0.25) = 30).

Front

What is the relationship between fractions and percents?

Back

Percents are a specific type of fraction where the denominator is always 100.