Percents 7th grade - Fredericks

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 total cost including sales tax?

Back

To calculate total cost, multiply the original price by the sales tax rate (as a decimal), then add that amount to the original price.

Front

What is a discount?

Back

A discount is a reduction in the original price of a product, often expressed as a percentage.

Front

How do you find the sale price after a discount?

Back

To find the sale price, subtract the discount amount from the original price. The discount amount is calculated by multiplying the original price by the discount rate (as a decimal).

Front

What is percent decrease?

Back

Percent decrease measures how much a quantity has decreased relative to its original amount, expressed as a percentage.

Front

How do you calculate percent decrease?

Back

Percent decrease = (Original Price - Sale Price) / Original Price x 100%.

Front

What is the formula to find what percent one number is of another?

Back

To find what percent one number (part) is of another (whole), use the formula: (Part / Whole) x 100%.

Front

If an item costs $50 and is on sale for $30, what is the percent decrease?

Back

Percent decrease = (50 - 30) / 50 x 100% = 40%.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100.

Front

What is the total cost of an item priced at $200 with a 10% sales tax?

Back

Total cost = $200 + ($200 x 0.10) = $220.