Lesson 562 of 1524
Math Models
Make sure all the words and ideas are understood
Practice this chapterMake sure all the words and ideas are understood Choose a variable to represent that quantity
It may be helpful to restate the problem in one sentence with all the important information. Then, translate the English sentence into an algebra equation
principal — The principal is the original amount of money invested or borrowed for a period of time at a specific interest rate. amount of discount — The amount of discount is the amount resulting when a discount rate is multiplied by the original price of an item. discount rate — The discount rate is the percent used to determine the amount of a discount, common in retail settings. rate of interest — The rate of interest is a percent of the principal, usually expressed as a percent per year.
Be able to list the types of coins; write in the value of each type of coin; write in the total value of all the coins.
Worked example
What does “principal” mean in Math Models?
- 1Use the wording this chapter gives for principal.
- 2The book says: The principal is the original amount of money invested or borrowed for a period of time at a specific interest rate.
- 3Do not use the meaning of amount of discount. That term means The amount of discount is the amount resulting when a discount rate is multiplied by the original price of an item.
Result: The principal is the original amount of money invested or borrowed for a period of time at a specific interest rate
Why. That is the meaning this chapter gives for principal.
Do not swap principal and amount of discount. principal means The principal is the original amount of money invested or borrowed for a period of time at a specific interest rate. amount of discount means The amount of discount is the amount resulting when a discount rate is multiplied by the original price of an item.
Practice margin
This chapter
A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.