Simple Interest With Partial Years
Written by Adi Ackerman, Head Teacher
"Simple Interest With Partial Years" is written for 7th Grade (Ages 12-13), and it covers Common Core 7.RP.A.3. A 6th grader who is already steady on percents can use it too, and an older student can use it as a short review.
7th grade math worksheet: use I = Prt to find simple interest for partial years, such as $800 at 4.5% for 9 months. Answer key included. Part of our percent word problems percents collection. Aligned to Common Core standards.
How do I use this worksheet?
Use Multi-Step Percent Word Problems as a starting point, then pick sheets by skill. Ask students to show their work, since most problems have two steps.
What students will practice
- Students will use I = Prt to find simple interest.
- Students will change months to years for the time t.
- Students will solve for the rate or the time when the interest is given.
Curriculum Links
Common Core State Standards
Ratios and Proportional Relationships · 7th Grade
Standard: Use proportional relationships to solve multistep ratio and percent problems.
View all 7.RP.A.3 worksheets →Find this in the curriculum
Browse the grade, subject, and topic this belongs to.
FAQ
How do I use this percent word problems worksheet?
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Use Multi-Step Percent Word Problems as a starting point, then pick sheets by skill. Ask students to show their work, since most problems have two steps.
What does this worksheet teach?
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Use I = Prt to find simple interest for partial years, such as $800 at 4.5% for 9 months. The directions on the page read: Use I = Prt. I is the interest in dollars, P is the starting amount, r is the yearly rate as a decimal and t is the time in years. Show your work. An answer key is included.
Can I use this percent word problems worksheet for homeschool or classroom?
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Yes, both. We made it for 7th grade percents, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.
What kinds of percent problems are on these sheets?
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They cover discounts, sales tax, tips, markups and markdowns, percent increase and decrease, and simple interest. Each sheet focuses on a few of these in real situations.
How do you find the price before tax?
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Write an equation and divide the total by 1 plus the tax rate as a decimal. Find the Tax Rate or Original Price has students do this for totals such as $26.46 with 8% tax.
How do you find the interest for a number of months?
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Change the months to years, then use I = Prt. Simple Interest With Partial Years uses 9 months for $800 at 4.5% as its first problem.
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