Compound Interest CalculatorA customised online calculator for quickly finding the solutions to compound interest problems. 
Compound interest can be calculated by using the following formula to calculate the final amount or future value (FV)
\(PV\) is the present value.
\(n\) is the number of years.
\(r\) is the rate of interest.
or by using the iterative function
$$x_{n+1} = x_n + \frac{x_n \times r}{100} $$where \(x_0\) is the present value [See Calculator Workout Skill 16]
\(PV\) is the present value.
\(n\) is the number of years.
\(r\) is the rate of interest.
\(k\) is the number of compounding periods per year.
Advanced feature:
To calculate depreciation use a negative interest rate (r).


Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions. 
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Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician? Comment recorded on the 1 February 'Starter of the Day' page by Terry Shaw, Beaulieu Convent School: "Really good site. Lots of good ideas for starters. Use it most of the time in KS3." Comment recorded on the 9 April 'Starter of the Day' page by Jan, South Canterbury: "Thank you for sharing such a great resource. I was about to try and get together a bank of starters but time is always required elsewhere, so thank you." 
Teacher! Are you delivering Maths lessons online? Tutors! Are your tutorials now taking place via a video link? Parents! Has homeschooling been thrust upon you at short notice? There are many resources to help you on the Maths At Home page. From ready made lesson plans to software suggestions and it's all free. Stay safe and wash yout hands! 

Numeracy"Numeracy is a proficiency which is developed mainly in Mathematics but also in other subjects. It is more than an ability to do basic arithmetic. It involves developing confidence and competence with numbers and measures. It requires understanding of the number system, a repertoire of mathematical techniques, and an inclination and ability to solve quantitative or spatial problems in a range of contexts. Numeracy also demands understanding of the ways in which data are gathered by counting and measuring, and presented in graphs, diagrams, charts and tables." Secondary National Strategy, Mathematics at key stage 3 

Go MathsLearning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths main page links to more activities designed for students in upper Secondary/High school. TeachersIf you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows: 

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