# E-Maths: Problems on Compound Interest

Formula to calculate total amount in a compound interest question is provided in GCE O-Level E-Maths examinations so students don't have to memorise.

It is therefore important for students to know how to use the compound interest formula.

Notice in these two questions, the frequency of compounding affects the value of r and n so it affects the total amount as well.

I always share with my students in my weekly O-Level Maths tuition classes to put themselves in the shoes of a banker who helps their client to grow their money. The frequency of compounding is just like the frequency they meet their client and at each meeting they need to inform how much rate their money has grown based on the frequency of compound.

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### Ai Ling Ong

Hi, I'm Ai Ling Ong. I enjoy coaching students who have challenges with understanding and scoring in 'O' Level A-Maths and E-Maths. I develop Math strategies, sometimes ridiculous ideas to help students in understanding abstract concepts the fast and memorable way. I write this blog to share with you the stuff I teach in my class, the common mistakes my students made, the 'way' to think, analyze... If you have found this blog post useful, please share it with your friends. I will really appreciate it! :)