Write and Solve Percent Equations
Written by Adi Ackerman, Head Teacher
"Write and Solve Percent Equations" is written for 8th Grade (Ages 13-14). A 7th grader who is already steady on percents can use it too, and an older student can use it as a short review.
8th grade math worksheet: write and solve percent equations for 6 word problems, such as $364 as 65% of a guitar's cost. Answer key included. Part of our percent equations percents collection.
How do I use this worksheet?
Teach one unknown at a time with the first three sheets. Then use the word problem sheet to practice setting up equations and the mixed review to check that students can tell the three kinds apart.
What students will practice
- Students will write a percent equation with a letter for the unknown.
- Students will solve for the part, the whole or the percent.
- Students will label each answer with its unit.
Curriculum Links
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FAQ
How do I use this percent equations worksheet?
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Teach one unknown at a time with the first three sheets. Then use the word problem sheet to practice setting up equations and the mixed review to check that students can tell the three kinds apart.
What does this worksheet teach?
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Write and solve percent equations for 6 word problems, such as $364 as 65% of a guitar's cost. The directions on the page read: Write an equation with a letter for the unknown. Solve it and show your work. The page opens with a worked example, and an answer key is included.
Can I use this percent equations worksheet for homeschool or classroom?
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Yes, both. We made it for 8th 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.
How do you solve a percent equation for the whole?
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Write the percent as a decimal and divide the part by it. For 65% of n = 117, 0.65n = 117, so n = 117 ÷ 0.65 = 180. Solve Percent Equations for the Whole has 14 equations like this.
How do you solve n% of a number?
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Divide the part by the whole, then write the quotient as a percent. For n% of 160 = 52, 52 ÷ 160 = 0.325, so n = 32.5. Solve Percent Equations for the Percent practices this.
How do you write a percent equation from a word problem?
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Choose a letter for the unknown and write the percent as a decimal times the whole. If 69 pages is 30% of a book, then 0.3p = 69 and p = 230 pages. Write and Solve Percent Equations has six problems to set up.
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