Last updated: May 1, 2026
AI Percentages Quizzes
for Grade 8
AI-powered math quizzes for Grade 8 — ready to print in seconds.
Grade 8 · Math
Percentages Quiz
Answer all questions.
1.A shirt costs $45 and is 20% off. What is the sale price?
2.What percent of 60 is 15?
3.Increase 80 by 15%. What is the result?
4.A class has 30 students. 12 are boys. What percentage are girls?
5.Convert 0.375 to a percentage.
95%
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Mini Percentages Quiz generator
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1.A shirt costs $45 and is 20% off. What is the sale price?
2.What percent of 60 is 15?
A25%B15%C30%D20%3.Increase 80 by 15%. What is the result?
3 questions · Generated locally · no signup
Want a full quiz? →Why teachers use AI for this topic
This page is built around percentages quizzes for Grade 8. Porosheets generates structured questions, spacing, and headings so you spend less time formatting and more time teaching.
Use the preview above as a sample of what you can create: real percentages prompts, varied formats, and an answer key you can print on a separate page. Everything is editable before you download.
Percentages shows up across units and standards; having ready-made quiz drafts helps you differentiate for small groups, homework, and review days without rebuilding the same layout every time.
If you teach math, you already know how long it takes to write fair, clear items from scratch. AI accelerates the first pass — you refine for your classroom, your pacing, and your district expectations.
Common mistakes
Misconceptions students bring to percentages
Specific errors to watch for when reviewing student work — pulled from classroom research and teacher reports.
Confusing 'increase by 50%' with 'multiply by 50%'.
What to teach instead: An increase of 50% means multiply by 1.5; multiplying by 0.5 halves the value.
$100 increased by 50% is $150, not $50.
Thinking percentages can't exceed 100%.
What to teach instead: Percentages can be greater than 100 — they describe ratios, not just parts of a whole.
150% of 20 = 30.
Adding successive percentage changes directly.
What to teach instead: A 10% increase followed by a 10% decrease is not 0% — it's a 1% net decrease.
100 → 110 → 99.
Key vocabulary
Percentages terms students should know
A short glossary of core vocabulary you can drop into any worksheet, quiz, or study guide.
- Percent
- A ratio expressed as a fraction of 100.
- Percent change
- How much a value has increased or decreased compared to the original, as a percentage.
- Discount
- An amount taken off a price, often given as a percent.
- Markup
- An amount added to a cost to set a selling price.
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