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The worksheet focuses on simple interest calculations, primarily asking students to calculate interest, principal, rate, or time in various scenarios involving savings accounts. Let’s go over each question briefly:

1. **Simple Interest Calculation (3 years at 2.15%)**
   - **Given**: Principal = $3,700, Rate = 2.15%, Time = 3 years.
   - **Formula**: $ I = P \times R \times T $.
   - **Answer**: Already calculated as $238.65.

2. **Simple Interest Calculation (4.5 years at 2.25%)**
   - **Given**: Principal = $6,000, Rate = 2.25%, Time = 4.5 years.
   - **Answer**: Calculated as $607.50.

3. **Calculating Principal Needed to Earn Specific Interest**
   - **Given**: Interest = $700, Rate = 2%, Time = 1.5 years.
   - Rearranged formula: $ P = \frac{I}{R \times T} $.
   - **Answer**: Calculated as $23,333.33.

4. **Finding Required Rate to Reach a Future Value**
   - **Given**: Final amount needed, current savings, time, etc.
   - This requires a rearrangement of the simple interest formula.

5. **Finding Time to Reach a Future Value**
   - **Given**: Current balance, target amount, and interest rate.

6. **Time to Double Money at 1.6%**
   - This involves solving for $ T $ when doubling the initial amount.

7. **Interest Calculation for Partial Year**
   - **Given**: $1,500, time = 11 months (convert to fraction of a year), rate = 3.75%.

8. **Interest Calculation for Partial Year with Different Rate**
   - Similar to #7 but for 275 days.

9. **Detailed Interest Accumulation Over Three Years**
   - **Given**: $1,230 at 2.19% for three years. Separate year-by-year interest accumulation.

Would you like detailed solutions for any specific question?

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**Related Questions to Explore:**

1. How does compound interest differ from simple interest?
2. What happens to the interest earned if the interest rate is doubled?
3. How would changes in the time period affect interest earned?
4. How can you calculate interest if interest is compounded monthly rather than annually?
5. Why does a longer time period result in higher interest earned?

**Tip:** Simple interest is only affected by the initial principal, unlike compound interest, where interest builds on previous interest.

Exercises on calculating simple interest, principal, rate, or time in various savings account scenarios.

This page provides a series of exercises on calculating simple interest, principal, rate, or time, designed for students in grades 9-11. Learn how to solve questions involving savings accounts, interest rates, and specific interest calculations with step-by-step solutions.

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