PBS
The Lowdown — The Math of Credit Cards
Take credit for finding a great lesson on credit cards. Future consumers first learn about lines of credit and credit cards by watching a video. They then work through some problems on simple interest and monthly payments.
My Secret Math Tutor
Consumer Math - How to Compute Simple Interest
Watch as the Secret Math Tutor demonstrates how to compute simple interest in a helpful math video. The narrator poses a word problem and formula before working through the problem, complete with explanation and work shown.
Khan Academy
Interest (Part 2), Interest and Debt, Finance and Capital Markets
Another example of simple interest and compound interest (compounded yearly) is explored in this video.
Curated OER
What is the Formula for Compound Interest?
View this tutorial for more than just a description of the formula for compound interest! An instructor goes through a problem, showing how to find simple interest and compound interest. After she completes each version, she explains the...
Curated OER
How Do You Use the Formula for Simple Interest?
I=prt is the formula for simple interest. What does each variable represent? I =interest, p =amount originally invested, r =rate of interest (usually in percent), t =time. Now all you have to do is plug in the numbers and do the...
Curated OER
What is the Formula for Simple Interest?
I=prt is the formula for interest. What does each variable represent? I =interest, p =amount originally invested, r =rate of interest (usually in percent), t =time. Now all you have to do is plug in the numbers and do the calculations.
Curated OER
What is the Formula for Simple Interest?
I=prt is the formula for interest. What does each variable represent? I =interest, p =amount originally invested, r =rate of interest (usually in percent), t =time. Now all you have to do is plug in the numbers and do the calculations.
Curated OER
What is the Formula for Compound Interest?
View this tutorial for more than just a description of the formula for compound interest! An instructor goes through a problem, showing how to find simple interest and compound interest. After she completes each version, she explains the...
Curated OER
How Do You Use the Formula for Simple Interest?
I=prt is the formula for simple interest. What does each variable represent? I =interest, p =amount originally invested, r =rate of interest (usually in percent), t =time. Now all you have to do is plug in the numbers and do the...
Khan Academy
Khan Academy: Pre Calculus: Interest (Part 2)
A continuation of the video Introduction to Interest also from the Khan Academy. This segment develops formulas for both simple and compound interest using the variables P, r and t. After each of the formulas are derived, they are used...
Virtual Nerd
Virtual Nerd: How Do You Use the Formula for Simple Interest?
Take a look at this tutorial to understand word problems involving simple interest. [3:00]
Virtual Nerd
Virtual Nerd: What Is the Formula for Simple Interest?
Watch this tutorial and learn the formula for calculating simple interest. [2:11]
Virtual Nerd
Virtual Nerd: How Do You Solve a More Complicated Interest Problem?
Are you into investments? Follow along as this tutorial goes through a word problem involving interest at different rates. [6:17]
Sophia Learning
Sophia: Calculating Simple Interest
Determine how simple interest is calculated in this lesson.
Sophia Learning
Sophia: Calculating Simple Interest
Determine how much money could be made over a period of time with this simple interest equation.
Other
Algebra2go: Simple Interest
Professor Perez's virtual classroom provides examples that demonstrate how to calculate simple interest.
Khan Academy
Khan Academy: Pre Calculus: Introduction to Interest
A brief instructional video introducing the concept of interest. The difference between simple and compound interest is explored through one concrete example where $100 accrues interest at a rate of 10%. By showing this example using...
PatrickJMT
Patrick Jmt: Understanding Simple Interest and Compound Interest
This video explains the difference between simple interest and compound interest. [13:06]
Khan Academy
Khan Academy: Appropriate Units
Examples for determining the appropriate units to use to measure a quantity of interest.
Khan Academy
Khan Academy: Interest (Part 2)
Expand the equation to calculate simple interest for a single period, P*(1+r), to calculate interest when interest is charged for more than one period and that interest is compounded at different intervals. [8:02]
Khan Academy
Khan Academy: Interest (Part 2)
A video [11:40] explaining the equation to calculate simple interest for a single period and to calculate interest when it is compounded at different intervals. This shows the difference between simple interest and compounding interest.
