Percents Review

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 the discount amount?

Back

To calculate the discount amount, multiply the original price by the discount percentage (as a decimal).

Front

What is the formula to find the sale price after a discount?

Back

Sale Price = Original Price - Discount Amount.

Front

If an item costs $250 and is on sale for 30% off, what is the discount amount?

Back

Discount = $250 x 0.30 = $75.

Front

What is the sale price of an item that costs $250 with a $75 discount?

Back

Sale Price = $250 - $75 = $175.

Front

How do you calculate sales tax?

Back

To calculate sales tax, multiply the total price by the sales tax rate (as a decimal).

Front

If a dinner bill is $38.75 and the sales tax is 6%, what is the sales tax amount?

Back

Sales Tax = $38.75 x 0.06 = $2.325, rounded to $2.33.

Front

What is the total bill after adding a 20% tip to a $38.75 dinner bill?

Back

Tip = $38.75 x 0.20 = $7.75. Total Bill = $38.75 + $7.75 + $2.33 (tax) = $49.29.

Front

How do you calculate percent change?

Back

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

Front

If an item's original cost is $50 and the new cost is $60, what is the percent change?

Back

Percent Change = (($60 - $50) / $50) x 100 = 20% increase.