Percent Problems

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 percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (in decimal form) and then divide by 100.

Front

What is the formula for percent change?

Back

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

Front

What is simple interest?

Back

Simple interest is calculated on the principal amount only, not on the interest accrued.

Front

How do you calculate simple interest?

Back

Simple Interest = Principal x Rate x Time.

Front

What is a tip in the context of service?

Back

A tip is a sum of money given to someone for their service, typically calculated as a percentage of the total bill.

Front

How do you find the total amount after a tip is added?

Back

Total Amount = Original Bill + (Tip Percentage x Original Bill).

Front

What is sales tax?

Back

Sales tax is a percentage added to the price of goods and services, collected by the seller.

Front

How do you calculate sales tax?

Back

Sales Tax = Price of Item x Sales Tax Rate.

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the true value.