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. $1400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 30% · 2 · 2 · Compound interest & growth
2. $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
3. $1500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1500 · 10% · 2 · 2 · Compound interest & growth
4. $300 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$300 · 10% · 2 · 2 · Compound interest & growth
5. $100 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$100 · 10% · 2 · 2 · Compound interest & growth
6. $200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$200 · 50% · 2 · 2 · Compound interest & growth
7. $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
8. $1300 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1300 · 30% · 2 · 2 · Compound interest & growth
9. $200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$200 · 10% · 2 · 2 · Compound interest & growth
10. $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
11. $200 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$200 · 20% · 2 · 2 · Compound interest & growth
12. $300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$300 · 20% · 2 · 2 · Compound interest & growth

12 questions · Seed 51 · 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. $1400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2366
Value = $1400 × (1 + 30/100)² = $2366.
2. $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.
3. $1500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1815
Value = $1500 × (1 + 10/100)² = $1815.
4. $300 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$363
Value = $300 × (1 + 10/100)² = $363.
5. $100 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$121
Value = $100 × (1 + 10/100)² = $121.
6. $200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$450
Value = $200 × (1 + 50/100)² = $450.
7. $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.
8. $1300 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2197
Value = $1300 × (1 + 30/100)² = $2197.
9. $200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$242
Value = $200 × (1 + 10/100)² = $242.
10. $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.
11. $200 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$288
Value = $200 × (1 + 20/100)² = $288.
12. $300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$432
Value = $300 × (1 + 20/100)² = $432.

12 questions · Seed 51 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Compound interest & growth

Take your time. Show your thinking.

1. $1400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 30% · 2 · 2 · Compound interest & growth
2. $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
3. $1500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1500 · 10% · 2 · 2 · Compound interest & growth
4. $300 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$300 · 10% · 2 · 2 · Compound interest & growth
5. $100 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$100 · 10% · 2 · 2 · Compound interest & growth
6. $200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$200 · 50% · 2 · 2 · Compound interest & growth
7. $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
8. $1300 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1300 · 30% · 2 · 2 · Compound interest & growth
9. $200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$200 · 10% · 2 · 2 · Compound interest & growth
10. $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
11. $200 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$200 · 20% · 2 · 2 · Compound interest & growth
12. $300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$300 · 20% · 2 · 2 · Compound interest & growth

12 questions · Seed 51 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Compound interest & growth

Answers and reasoning. Review before teaching.

1. $1400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2366
Value = $1400 × (1 + 30/100)² = $2366.
2. $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.
3. $1500 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1815
Value = $1500 × (1 + 10/100)² = $1815.
4. $300 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$363
Value = $300 × (1 + 10/100)² = $363.
5. $100 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$121
Value = $100 × (1 + 10/100)² = $121.
6. $200 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$450
Value = $200 × (1 + 50/100)² = $450.
7. $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.
8. $1300 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2197
Value = $1300 × (1 + 30/100)² = $2197.
9. $200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$242
Value = $200 × (1 + 10/100)² = $242.
10. $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.
11. $200 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$288
Value = $200 × (1 + 20/100)² = $288.
12. $300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$432
Value = $300 × (1 + 20/100)² = $432.

12 questions · Seed 51 · Age guidance, not curriculum certification