Time & moneyAges 16-18

Compound interest & growth

Calculate the compounded value of an investment over two annual compounding periods. Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 16-18

Compound interest & growth

Take your time. Show your thinking.

1. $800 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$800 · 50% · 2 · 2 · Compound interest & growth
2. $1300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1300 · 50% · 2 · 2 · Compound interest & growth
3. $300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$300 · 50% · 2 · 2 · Compound interest & growth
4. $1100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1100 · 20% · 2 · 2 · Compound interest & growth
5. $500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$500 · 10% · 2 · 2 · Compound interest & growth
6. $1500 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1500 · 30% · 2 · 2 · Compound interest & growth
7. $100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$100 · 20% · 2 · 2 · Compound interest & growth
8. $600 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$600 · 20% · 2 · 2 · Compound interest & growth
9. $1200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1200 · 50% · 2 · 2 · Compound interest & growth
10. $900 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$900 · 50% · 2 · 2 · Compound interest & growth
11. $1400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 50% · 2 · 2 · Compound interest & growth
12. $400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$400 · 10% · 2 · 2 · Compound interest & growth

12 questions · Seed 53 · Age guidance, not curriculum certification

View the answer key

Worksheet StudioAnswer key · Ages 16-18

Compound interest & growth

Answers and reasoning. Review before teaching.

1. $800 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1800
Value = $800 × (1 + 50/100)² = $1800.
2. $1300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2925
Value = $1300 × (1 + 50/100)² = $2925.
3. $300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$675
Value = $300 × (1 + 50/100)² = $675.
4. $1100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1584
Value = $1100 × (1 + 20/100)² = $1584.
5. $500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$605
Value = $500 × (1 + 10/100)² = $605.
6. $1500 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2535
Value = $1500 × (1 + 30/100)² = $2535.
7. $100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$144
Value = $100 × (1 + 20/100)² = $144.
8. $600 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$864
Value = $600 × (1 + 20/100)² = $864.
9. $1200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2700
Value = $1200 × (1 + 50/100)² = $2700.
10. $900 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2025
Value = $900 × (1 + 50/100)² = $2025.
11. $1400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$3150
Value = $1400 × (1 + 50/100)² = $3150.
12. $400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$484
Value = $400 × (1 + 10/100)² = $484.

12 questions · Seed 53 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Compound interest & growth

Take your time. Show your thinking.

1. $800 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$800 · 50% · 2 · 2 · Compound interest & growth
2. $1300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1300 · 50% · 2 · 2 · Compound interest & growth
3. $300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$300 · 50% · 2 · 2 · Compound interest & growth
4. $1100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1100 · 20% · 2 · 2 · Compound interest & growth
5. $500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$500 · 10% · 2 · 2 · Compound interest & growth
6. $1500 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1500 · 30% · 2 · 2 · Compound interest & growth
7. $100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$100 · 20% · 2 · 2 · Compound interest & growth
8. $600 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$600 · 20% · 2 · 2 · Compound interest & growth
9. $1200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1200 · 50% · 2 · 2 · Compound interest & growth
10. $900 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$900 · 50% · 2 · 2 · Compound interest & growth
11. $1400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 50% · 2 · 2 · Compound interest & growth
12. $400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$400 · 10% · 2 · 2 · Compound interest & growth

12 questions · Seed 53 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Compound interest & growth

Answers and reasoning. Review before teaching.

1. $800 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1800
Value = $800 × (1 + 50/100)² = $1800.
2. $1300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2925
Value = $1300 × (1 + 50/100)² = $2925.
3. $300 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$675
Value = $300 × (1 + 50/100)² = $675.
4. $1100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1584
Value = $1100 × (1 + 20/100)² = $1584.
5. $500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$605
Value = $500 × (1 + 10/100)² = $605.
6. $1500 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2535
Value = $1500 × (1 + 30/100)² = $2535.
7. $100 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$144
Value = $100 × (1 + 20/100)² = $144.
8. $600 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$864
Value = $600 × (1 + 20/100)² = $864.
9. $1200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2700
Value = $1200 × (1 + 50/100)² = $2700.
10. $900 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2025
Value = $900 × (1 + 50/100)² = $2025.
11. $1400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$3150
Value = $1400 × (1 + 50/100)² = $3150.
12. $400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$484
Value = $400 × (1 + 10/100)² = $484.

12 questions · Seed 53 · Age guidance, not curriculum certification