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Percent Vocabulary
Math 7A 2021-2022 Percent Vocab.
| Term | Definition |
|---|---|
| Sales Tax | Amount of money added on to the cost of items to help pay for roads, police, fire fighters, bridges etc. |
| Sales Tax Rate | The percent added onto the cost of items. (THE PERCENT not the dollar amount) |
| Gratuity (Tip) | Money paid in appreciation for a service given. (waiters/ barber/ service people) |
| Markup | Increase in the cost of an item to ensure a profit. |
| Discount | Amount off the price of an item as a promotion. |
| Interest | For savings account: a percentage of your money that you get from what you have (bank gives you) - Good For credit card: money they charge you based on a percent of what you spent (if you don't pay it off) - Bad Teacher Definition: (both charged and earned) Savings accounts earn interest |
| Principle | An initial investment. (The original amount of money you put in as an investment) |
| Commission | Money that is a percent of total sales. (cars, houses, etc.) - (making money based off what you sold) - Example: sell a $100,000 car, you get 10%, you make 10,000 from that one car. |
| Decimal to Percent | Multiply by 100 (Example: 0.2 * 100 = 20%) |
| Percent to Decimal | Divide by 100 (Example: 20% / 100 = 0.2) |
| Fraction to Percent (Method #1 - not with 100) | Fraction --> decimal --> percent, attach a percent sign |
| Fraction to Percent (Method #2 - with 100) | Use equivalent fractions to set the denominator of the fraction to 100 |
| Percent to Fraction | Put the percentage over a denominator of 100 and simplify. |
| Fraction to Decimal | Divide numerator by denominator. |
| Decimal to Fraction | Read the decimal the way we’re supposed to. (Put decimal over 100 and simplify - Example: 0.50 --> 50/100 = 5/10) |