Simple interest: find the interest
Use interest = principal × rate × time, with the rate as a percent per year.
Loading a question…
You've done today's 10 free questions.
Come back tomorrow for 10 more, or get unlimited practice with a membership.
Want more today? Print 20 more questions free, with the answers.
Already a member? Sign in.
See worked examples
$400 is invested at 2% simple interest per year for 2 years. How much interest is earned?
Answer: $16.00
$800 is invested at 10% simple interest per year for 2 years. How much interest is earned?
Answer: $160.00
$200 is invested at 2% simple interest per year for 2 years. How much interest is earned?
Answer: $8.00
Tip: Use interest = principal × rate × time, with the rate as a percent per year.
Print a worksheet of this skill New questions and an answer key, free.
Up next
- Next in this topic Simple interest: find the total amount Year 8
Print a free worksheet with answers (20 questions).
Learn it hands-on
- Mix It, Pace It: Ratio, Rate and Percent Grades 6–7 · printable lessons
Practise without limits
Members practise as much as they like, every day, and get the printable packs and lessons too.