Simple Interest Worksheets
Calculate simple interest and final balances without compounding.
Before you begin
Multiply, divide and simplify fractions. Read quantities with their units.
Worked example
A principal of $1300 earns 7% simple interest per year for 1 years. Find the interest earned.
- Simple interest I = principal × annual rate × years.
- I = 1300 × 7/100 × 1 = 91.
- This is interest only, not the total balance.
Answer: 91 dollars
Check your result using the method in the example before moving to the next question.
Choose your level
- Easy: Use whole-number rates and small factors.
- Medium: Find missing values in equivalent ratios.
- Hard: Use two steps or reverse a relationship.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
Preview and print an easy set
Try six questions below, or choose a full set at your level.
1
A principal of $800 earns 4% simple interest per year for 2 years. Find the interest earned.
2
A principal of $2200 earns 1% simple interest per year for 2 years. Find the final balance.
3
A principal of $2400 earns 6% simple interest per year for 1 years. Find the interest earned.
4
A principal of $2000 earns 3% simple interest per year for 2 years. Find the final balance.
5
A principal of $1900 earns 8% simple interest per year for 1 years. Find the interest earned.
6
A principal of $3000 earns 8% simple interest per year for 1 years. Find the final balance.
Answer Key
1. 64 dollars2. 2244 dollars3. 144 dollars4. 2120 dollars5. 152 dollars6. 3240 dollars