InterestPractise using the formulas for simple interest and compound interest. 
This is level 1; Simple Interest. Give all of your answers to two decimal places. You can earn a trophy if you get at least 9 correct and you do this activity online.
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 



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Level 1  Simple Interest
Level 2  Compound Interest
Level 3  Exam Style Questions
Simple interest: I = P × R ÷ 100 × T
Compound interest: I = P(1 + R ÷ 100)^{T} − P
I is the amount of interest earned by the investment.
P is the principal, the amount originally invested.
R is the rate of interest expressed as a percentage.
T is the number of years the amount was invested for.
If you are following a syllabus that allows the use of a graphic display calculator you could use the Finance Solver to help calculate answers for the compound interest questions.
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