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.

New variation Try interactive challenge Browse templates

Choose “Save as PDF” to keep a copy. Use your browser’s paper setting for A4 or Letter.

Worksheet StudioPractice pack · Ages 16-18

Compound interest & growth

Take your time. Show your thinking.

1. $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
2. $1400 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 20% · 2 · 2 · Compound interest & growth
3. $1400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 10% · 2 · 2 · Compound interest & growth
4. $1100 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1100 · 50% · 2 · 2 · Compound interest & growth
5. $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
6. $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
7. $1500 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1500 · 50% · 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. $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
10. $800 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$800 · 20% · 2 · 2 · Compound interest & growth
11. $700 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$700 · 20% · 2 · 2 · Compound interest & growth
12. $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

12 questions · Seed 49 · 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. $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.
2. $1400 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2016
Value = $1400 × (1 + 20/100)² = $2016.
3. $1400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1694
Value = $1400 × (1 + 10/100)² = $1694.
4. $1100 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2475
Value = $1100 × (1 + 50/100)² = $2475.
5. $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.
6. $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.
7. $1500 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$3375
Value = $1500 × (1 + 50/100)² = $3375.
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. $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.
10. $800 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1152
Value = $800 × (1 + 20/100)² = $1152.
11. $700 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1008
Value = $700 × (1 + 20/100)² = $1008.
12. $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.

12 questions · Seed 49 · Age guidance, not curriculum certification

Worksheet StudioPractice pack · Ages 16-18

Compound interest & growth

Take your time. Show your thinking.

1. $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
2. $1400 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 20% · 2 · 2 · Compound interest & growth
3. $1400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1400 · 10% · 2 · 2 · Compound interest & growth
4. $1100 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1100 · 50% · 2 · 2 · Compound interest & growth
5. $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
6. $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
7. $1500 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1500 · 50% · 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. $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
10. $800 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$800 · 20% · 2 · 2 · Compound interest & growth
11. $700 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$700 · 20% · 2 · 2 · Compound interest & growth
12. $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

12 questions · Seed 49 · Age guidance, not curriculum certification

Worksheet StudioAnswer key · Ages 16-18

Compound interest & growth

Answers and reasoning. Review before teaching.

1. $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.
2. $1400 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2016
Value = $1400 × (1 + 20/100)² = $2016.
3. $1400 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1694
Value = $1400 × (1 + 10/100)² = $1694.
4. $1100 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$2475
Value = $1100 × (1 + 50/100)² = $2475.
5. $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.
6. $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.
7. $1500 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$3375
Value = $1500 × (1 + 50/100)² = $3375.
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. $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.
10. $800 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1152
Value = $800 × (1 + 20/100)² = $1152.
11. $700 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1008
Value = $700 × (1 + 20/100)² = $1008.
12. $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.

12 questions · Seed 49 · Age guidance, not curriculum certification