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Turn your math notes into difficult quiz questions

Upload a PDF, slides or notes and get harder multiple-choice, true/false and open questions, each with an explanation.

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How to get harder math practice from your own material

Many students searching for difficult math quizzes want questions that test whether they understand a method, not just whether they can recall a formula. The hardest useful questions usually come from your own course material, because that is what your exam will draw on.

Multi-step questions that match the difficulty of your exam
Explanations that show the method behind each correct answer
True/false items that catch common misconceptions
Open questions you answer yourself before checking the solution

Example difficult math quiz questions

Solve for x: 2^(x+1) = 32.x = 4. Because 32 = 2^5, the exponents must match, so x + 1 = 5.

True or false: the integral of 1/x dx equals ln|x| + C.True. The derivative of ln|x| is 1/x for x not equal to 0, so the antiderivative holds on each interval excluding zero.

How many real solutions does x^4 - 5x^2 + 4 = 0 have?4 solutions: x = ±1 and x = ±2. Substituting u = x^2 gives (u - 1)(u - 4) = 0, and each positive u gives two real x values.

What is the determinant of the matrix [[2, 3], [1, 4]]?5. For a 2 by 2 matrix, the determinant is ad - bc, which is 2 times 4 minus 3 times 1.

A fair six-sided die is rolled twice. What is the probability the sum is 7?1/6. Six of the 36 equally likely outcomes have a sum of 7, so 6 divided by 36 reduces to 1/6.

Generate the full set

Questions from your material

Quizzes are written from the PDFs, slides or notes you upload, so the difficulty matches the content your course actually covers.

Explanations for every answer

Each question comes with a short explanation of why the correct answer works, so a wrong answer becomes a lesson instead of a guess.

Photos of worked problems

Snap a page from a textbook or a whiteboard and text recognition reads it, so hard problems from paper can become quiz questions too.

How it works

Upload your material

Add a PDF, DOCX, PPTX, plain text notes or a photo of the page you are studying.

Choose the question type

Pick multiple choice, true/false or open questions, then generate a set and review the explanations.

Practice until the hard ones feel easy

Work through the quiz in the browser, redo the questions you missed and come back to the weak topics.

DeckOwl reads PDFs, DOCX and PPTX files, plain notes and photos of worked problems, then writes multiple-choice, true/false and short-answer questions with explanations. Start with a small set, miss a few on purpose to check the explanations, and raise the difficulty once the method is solid.

Check every generated answer against your textbook before you rely on it, especially for multi-step problems. Any AI tool can make an arithmetic or reasoning slip, and the explanation is there to help you verify the steps, not to replace your own check.

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Frequently asked questions

How hard should a practice math quiz be before an exam?

Aim for questions that need two or three steps, since that matches most exam problems. If you miss more than a third of a set, review the method before moving to harder questions.

Can I trust the answers to difficult math questions?

Treat them as a draft and verify multi-step solutions against your textbook or a worked example. Any AI tool can make arithmetic or reasoning errors, so the explanations are there for you to check.

Can I export math quizzes to Moodle or QTI?

Yes, on the Pro plan at $14.99/month, which includes QTI 2.1 and Moodle XML export. PDF, DOCX and Anki export are included on Plus at $39/year or $7.99/month.

Is there a free way to try it?

The free plan includes 3 generations per month and studying in the browser, and no credit card is needed to start. Exports are not included on the free plan.

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