REET Level 2 study notes
Simple and Compound Interest
Simple interest adds the same interest every year on the original principal. Compound interest adds interest to the amount after each period, so the next period earns interest on a larger base. For REET Level 2, the safe classroom path is table first, formula second: principal, rate, time, type of interest, then the asked quantity. The topic is bounded by the RBSE syllabus line on interest and is taught with percentage, profit-loss and depreciation as nearby arithmetic links.
Key points
- Simple interest uses the original principal for every year.
- Compound interest updates the base after each compounding period.
- For the same positive rate and more than one period, compound interest is usually higher.
- Always check whether the question asks for interest or amount.
- A year-wise table explains the formula better than memorisation alone.
- Percentage, profit-loss, depreciation and population growth are nearby transfer contexts.
- Classroom assessment should ask learners to name the error, not only correct it.
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Simple interest adds the same interest every year on the original principal. Compound interest adds interest to the amount after each period, so the next period earns interest on a larger base. For REET Level 2, the safe classroom path is table first, formula second: principal, rate, time, type of interest, then the asked quantity. The topic is bounded by the RBSE syllabus line on interest and is taught with percentage,...