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 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.

Tags

CCSS.6.RP.A.3C

Front

What is the formula for calculating commission?

Back

Commission = Sales Amount * Commission Rate.

Tags

CCSS.7.RP.A.3

Front

If an item costs $200 and is on sale for 25% off, what is the sale price?

Back

Sale Price = Original Price - (Original Price * Discount Rate) = $200 - ($200 * 0.25) = $150.

Tags

CCSS.6.RP.A.3C

Front

What does it mean to mark up a price?

Back

Marking up a price means increasing the original price of an item by a certain percentage to determine the selling price.

Tags

CCSS.6.RP.A.3C

Front

How do you find the total earnings from hourly wages and commission?

Back

Total Earnings = (Hourly Wage * Hours Worked) + (Sales Amount * Commission Rate).

Tags

CCSS.7.EE.B.3

Front

What is the relationship between a percent increase and the original value?

Back

A percent increase is calculated by taking the original value, multiplying it by the percent increase (in decimal form), and adding that to the original value.

Tags

CCSS.6.RP.A.3C

Front

If a product is marked up by 50% and the original price is $100, what is the new price?

Back

New Price = Original Price + (Original Price * Markup Rate) = $100 + ($100 * 0.50) = $150.

Tags

CCSS.6.RP.A.3C

Front

How do you calculate the original price before a discount?

Back

Original Price = Sale Price / (1 - Discount Rate). For example, if the sale price is $70 after a 30% discount, Original Price = $70 / (1 - 0.30) = $100.

Tags

CCSS.6.RP.A.3C

Front

What is the formula for calculating the percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) * 100.

Tags

CCSS.6.RP.A.3C