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Turn your math notes into a tricky quiz with AI

Upload your notes, slides or PDF and get multiple-choice, true/false and short answer questions that test the traps your teacher likes. Every answer comes with an explanation.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free account · 3 sets a month · Creates quizzes in seconds

Why build your own tricky math quiz

Printable math tests with tricky questions are easy to find, but they rarely match the chapter your class just covered. A tricky math quiz built from your own notes checks the exact methods and traps you need to know. Upload a PDF, slides or a photo of a worked page, and DeckOwl writes questions with an explanation for every answer.

Questions drawn from your lecture notes, textbook pages or slides
Multiple choice, true/false and short answer formats
Explanations that show where the reasoning breaks down
Spaced repetition on Plus, with PDF, DOCX, Anki and CSV export

Example tricky math quiz questions

A bat and a ball cost $1.10 in total. The bat costs $1.00 more than the ball. How much does the ball cost?$0.05. If the ball cost $0.10, the bat would be $1.00 more, so the total would be $1.20 instead of $1.10.

If 5 machines take 5 minutes to make 5 widgets, how long would 100 machines take to make 100 widgets?5 minutes. Each machine makes one widget in 5 minutes, so adding machines and widgets together keeps the time the same.

A lily pad patch doubles in size every day and covers the whole lake on day 48. On what day does it cover half the lake?Day 47. Because the patch doubles daily, it covers half the lake the day before it covers all of it.

True or false: the repeating decimal 0.999... equals 1.True. Let x = 0.999..., so 10x − x = 9 and x = 1.

Is 1 a prime number?No. A prime has exactly two distinct positive divisors, and 1 has only one.

Generate the full set

Questions from your own material

Upload a PDF, DOCX, PPTX, plain notes or a photo of a textbook page. The questions come from what you actually studied.

Multiple choice, true/false and short answer

Each question includes an explanation, so a wrong answer teaches you which step went off track.

Spaced repetition and exports

Study in the browser on the free plan. Plus adds spaced repetition and PDF, DOCX, Anki and CSV exports.

How it works

Upload your source

Add a PDF, DOCX, PPTX, notes or a photo of a worked page.

Choose question types

Pick multiple choice, true/false or short answer, then generate the quiz.

Study or export

Work through the quiz in your browser, or export a printable copy on Plus or Pro.

Tricky math questions usually hide a trap, such as a rate that does not scale the way it looks or a decimal that repeats forever. Explanations matter as much as the answer key because they show which step went wrong. The free plan lets you try the quiz in your browser first, and Plus adds PDF and DOCX exports if you want a printed copy.

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Frequently asked questions

How many questions should a tricky math quiz have?

Eight to twelve questions is a good length for one sitting, and a few multi-step problems make the quiz harder without making it longer. If your material is dense, start with a smaller set and work up.

What makes a math question tricky?

Tricky questions usually exploit a common misconception, such as treating a fraction or a rate like a whole number. Write down your first answer before reading the explanation so you can see where your thinking differed.

Can I export the quiz to print it?

PDF and DOCX exports are included on Plus, so you can print a custom quiz. The free plan lets you study in the browser without exports.

Is there a free way to try it?

Yes, the free plan includes 3 generations per month and no credit card is needed to start. Unlimited generations and Anki or CSV exports require Plus, and QTI 2.1 or Moodle XML export requires Pro.

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