Percents
Percents are used to communicate ideas to people everyday. All my lessons are designed to help you deeply explore the topic with real life applications.
You may have heard people say that they will give you a 5% discount if you purchase two Tshirts, or 5 pants.
Some jobs such as car sales pay based on a percentage of sales
If you have a saving account, the bank may give you a 3% interest every year.
Credit cards company charge high interest of 10% to 20% depending on your credit.
This unit will teach you many real life applications of the topic.
In the end, you should feel comfortable with the following topics: discount, sales tax, simple interest, commission, and tips.
A review of
fractions and
proportions
may help you understand this unit.
Therefore, go back and review them if time permits.
Meaning of percent
Crystal clear explanation using tables
Formula for percentage
Use a good percentage formula to solve problem with the following format: x% of y is ?
Percent to decimal
Learn why 6% = 0.06
Decimal to percent
Learn why 0.24 = 24%
Percent of increase
Find out the percentage a quantity is increased by
Percent of decrease
Find out the percentage a quantity is decreased by
Greatest possible error
Definition and examples of the greatest possible error and a calculator to practice.
Finding the percentage
Learn the difference between base, rate and percentage. Then, use the base and the rate to find the percentage
Calculate sales tax
How how to compute sales tax
Mortgage loans
Learn to calculate your down payment, the amount of mortgage and the total interest
Price discount
Learn how to find the amount to pay after you have been given a discount
Simple interest
Learn to compute a simple interest when the principal is known
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