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. $800 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$800 · 10% · 2 · 2 · Compound interest & growth
2. $1200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1200 · 10% · 2 · 2 · Compound interest & growth
3. $400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$400 · 30% · 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. $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
6. $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
7. $700 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$700 · 10% · 2 · 2 · Compound interest & growth
8. $1000 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1000 · 30% · 2 · 2 · Compound interest & growth
9. $400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$400 · 50% · 2 · 2 · Compound interest & growth
10. $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
11. $1300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1300 · 20% · 2 · 2 · Compound interest & growth
12. $100 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$100 · 30% · 2 · 2 · Compound interest & growth

12 questions · Seed 54 · 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 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$968
Value = $800 × (1 + 10/100)² = $968.
2. $1200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1452
Value = $1200 × (1 + 10/100)² = $1452.
3. $400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$676
Value = $400 × (1 + 30/100)² = $676.
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. $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.
6. $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.
7. $700 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$847
Value = $700 × (1 + 10/100)² = $847.
8. $1000 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1690
Value = $1000 × (1 + 30/100)² = $1690.
9. $400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$900
Value = $400 × (1 + 50/100)² = $900.
10. $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.
11. $1300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1872
Value = $1300 × (1 + 20/100)² = $1872.
12. $100 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$169
Value = $100 × (1 + 30/100)² = $169.

12 questions · Seed 54 · 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 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$800 · 10% · 2 · 2 · Compound interest & growth
2. $1200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1200 · 10% · 2 · 2 · Compound interest & growth
3. $400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$400 · 30% · 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. $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
6. $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
7. $700 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$700 · 10% · 2 · 2 · Compound interest & growth
8. $1000 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1000 · 30% · 2 · 2 · Compound interest & growth
9. $400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$400 · 50% · 2 · 2 · Compound interest & growth
10. $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
11. $1300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1300 · 20% · 2 · 2 · Compound interest & growth
12. $100 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$100 · 30% · 2 · 2 · Compound interest & growth

12 questions · Seed 54 · 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 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$968
Value = $800 × (1 + 10/100)² = $968.
2. $1200 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1452
Value = $1200 × (1 + 10/100)² = $1452.
3. $400 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$676
Value = $400 × (1 + 30/100)² = $676.
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. $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.
6. $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.
7. $700 is invested at 10% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$847
Value = $700 × (1 + 10/100)² = $847.
8. $1000 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1690
Value = $1000 × (1 + 30/100)² = $1690.
9. $400 is invested at 50% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$900
Value = $400 × (1 + 50/100)² = $900.
10. $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.
11. $1300 is invested at 20% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$1872
Value = $1300 × (1 + 20/100)² = $1872.
12. $100 is invested at 30% compound interest per year, compounded annually for 2 years. What is the total value after 2 years?
$169
Value = $100 × (1 + 30/100)² = $169.

12 questions · Seed 54 · Age guidance, not curriculum certification