Percent and Tax

Front

What is the formula to calculate the percentage of a quantity?

Back

Percentage = (Part / Whole) x 100

Front

How do you calculate 20% of a number?

Back

Multiply the number by 0.20.

Front

What is sales tax?

Back

Sales tax is a percentage of the sale price added to the total cost of a purchase.

Front

How do you calculate the total cost including sales tax?

Back

Total Cost = Price + (Price x Sales Tax Rate)

Front

If a product costs $50 and the sales tax is 8%, what is the total cost?

Back

Total Cost = $50 + ($50 x 0.08) = $54.00

Front

What is the sales tax amount on a $100 purchase with a 5% tax rate?

Back

Sales Tax = $100 x 0.05 = $5.00

Front

How do you convert a fraction to a percentage?

Back

Divide the numerator by the denominator and multiply by 100.

Front

What is the relationship between percentage, fraction, and decimal?

Back

Percentage is a fraction out of 100, and can be converted to a decimal by dividing by 100.

Front

If Jenny spends 4 hours watching Netflix out of a 24-hour day, what percent of her day does she spend watching Netflix?

Back

Percentage = (4 / 24) x 100 = 16.67%.

Front

What is the total cost of an item priced at $30.10 with a 7% sales tax?

Back

Total Cost = $30.10 + ($30.10 x 0.07) = $32.21.