7th Grade Math (Math 7) · Chapter 4 · Lesson 4.10 · Printable PDF

Simple Interest Worksheet with Answer Key

7 problems on simple interest: using I equals Prt, finding the missing quantity, a 30 day loan, a car loan, a mistake with months, interest paid each year, and a savings bond. 2 pages, with a worked answer key.

7 problems2 pagesanswer key
Printable Simple interest worksheet with answer key - 7th Grade Math (Math 7) (Page 1 PDF preview)
Page 1 of 2

Get this sheet

This sheetWorksheet and answer key, yours to keep.
$5
Buy
SubscriptionOpen any sheet in any course, up to 40 a month, keys included. Or $40 month to month.
$25/mo, billed yearly
Subscribe
Full Course Set370+ Math 7 PDF files, no limit, yours to keep.
$400once
Buy

Try one first: a free Chapter 1 worksheet (PDF, no sign-in).

The full Math 7 courseEvery lesson in teaching order, with over 370 printables.See the course ›

What's on the worksheet

  1. Find the simple interest for each principal, rate and time.
    P = 500, r = 6\%, t = 2 yearsP = 1{,}250, r = 4\%, t = 3 yearsP = 900, r = 5.5\%, t = 4 yearsP = 2{,}000, r = 3.25\%, t = 6 monthsP = 640, r = 7.5\%, t = 1.5 years
  2. Find the missing quantity in each line of the interest formula.
    P = 400, t = 3 years, I = 54P = 1{,}500, r = 4\%, I = 150r = 6\%, t = 4 years, I = 180P = 2{,}400, r = 1.5\% per month, I = 180
  3. Word problem: interest on Sofia's 30 day loan counted in days.
  4. Word problem: total cost of Daniel's car loan from a credit union.
  5. Find the mistake in Ryan's interest for a loan repaid after 8 months.
  6. Word problem: Jasmine's uncle's loan with interest paid at year end.
  7. Use a savings bond's values at two year ends to find its interest.

Teach it first

The free lesson teaches it with worked examples and practice problems.

Simple interest: the lesson ›