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How Much Interest Will It Earn? is a free printable Grade 3 to Grade 5 social studies worksheet on figuring out simple interest on savings, aligned to C3 Framework indicator D2.Eco.10.3-5. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

How Much Interest Will It Earn?

D2.Eco.10.3-5

NameDate

Choose the best answer. For math problems, choose the work that gives the right answer.

1.Why does a bank pay interest on savings?
  • A.It lends the money to borrowers and charges them interest
  • B.Interest is a prize for walking in
  • C.The law says banks must give money away
2.$50 in a piggy bank earns $0. $50 in a savings account earns $1 a year. After 3 years, how much more is in the account?
  • A.$50 × 3 = $150
  • B.$50 + $1 = $51
  • C.3 × $1 = $3 more
3.What is an interest rate?
  • A.The number of banks in a town
  • B.The share of the money paid as interest each year
  • C.The cost of a piggy bank
4.An account pays $5 a year for every $100 saved. The interest is paid out each year. How much interest does $400 earn in 2 years?
  • A.$400 ÷ $100 = 4; 4 × $5 = $20; 2 × $20 = $40
  • B.$400 + $5 = $405
  • C.4 × $5 = $20
5.Lena's $100 earns $5 interest in a year. She leaves it all in the account. How much does she have after one year?
  • A.$100 + $5 = $105
  • B.$100 − $5 = $95
  • C.$100 × 5 = $500
6.Carlos saves $200 in an account that pays $3 a year for every $100. How much interest does he earn in one year?
  • A.$3 × 100 = $300
  • B.$200 ÷ $100 = 2; 2 × $3 = $6
  • C.$200 + $3 = $203
7.A savings account pays $2 a year for every $100 saved. How much interest does $300 earn in one year?
  • A.$300 ÷ $100 = 3; 3 × $2 = $6
  • B.$2 × 100 = $200
  • C.$300 + $2 = $302
8.A CD pays $4 a year for every $100. A savings account pays $1 for every $100. How much more does $100 earn in the CD in one year?
  • A.$4 − $1 = $3 more
  • B.$100 + $4 = $104
  • C.$4 + $1 = $5

LessonPrint · D2.Eco.10.3-5 · Set 5 · free to copy for classroom use

Answer key — How Much Interest Will It Earn?

Set 5. Prints on its own sheet.

  1. 1.It lends the money to borrowers and charges them interest
  2. 2.3 × $1 = $3 more
  3. 3.The share of the money paid as interest each year
  4. 4.$400 ÷ $100 = 4; 4 × $5 = $20; 2 × $20 = $40
  5. 5.$100 + $5 = $105
  6. 6.$200 ÷ $100 = 2; 2 × $3 = $6
  7. 7.$300 ÷ $100 = 3; 3 × $2 = $6
  8. 8.$4 − $1 = $3 more

Last reviewed 2026-09-05. Aligned to D2.Eco.10.3-5 of the C3 Framework for Social Studies State Standards.