Olympiad Practice Questions: Where to Find and How to Use Them

Good Olympiad practice questions come from four main places: the organiser's own sample papers, previous years' papers in prep guides, question banks, and free online practice tests. Whichever you use, how you practise matters more than how many questions you solve. This guide covers where to find reliable questions and how Olympiad questions differ from school ones. It also includes worked sample questions and a simple routine that takes you from topic practice to full mock tests.

Where to Find Good Olympiad Practice Questions

Here are the main types of sources, and what each one is good for:

• The organiser's official sample papers. Many Olympiad organisers publish sample papers on their websites. These show you the real format and difficulty, so start here if they are available. Check the official website to see what is currently offered and whether it is free.

• Previous years' papers in prep guides. Many printed Olympiad guides include past or model papers, and these are useful for spotting common question styles.

• Question banks. Books and websites that group questions by topic are ideal for building skills one chapter at a time.

• Free online practice tests. These are helpful for timed practice and instant feedback. OlympiadIQ offers Free Unlimited Mock Tests, and if you would like to compare other options, see our Olympiad preparation websites compared.

What makes a source trustworthy?

Before you spend time on any question set, check three things:

1. Olympiad-style format. The questions should be multiple-choice and test application and reasoning, not just definitions.

2. Correct answers with explanations. An answer key with only 'B' or 'C' teaches very little. You need to see why an answer is right.

3. A match to your class. The questions should be based on your class syllabus, with some stretch questions.

A word of warning about random worksheets

Many free worksheets online are just school textbook exercises with a new title. They are fine for school revision, but they won't prepare you for the twists Olympiad questions throw at you. If every question looks exactly like your textbook's back exercise, keep looking.

How Olympiad Questions Differ from School Exam Questions

School exams mostly reward you for remembering what was taught in a chapter. Olympiad questions use the same concepts but put them in unfamiliar settings. You might need to combine two ideas, read a diagram carefully, or spot a trap in the wording, all while working against the clock with four options in front of you.

For example, a school question might ask: 'Define conduction.' An Olympiad-style question might describe a situation and ask you to work out what is happening and why.

Some Olympiads also include a separate reasoning section and a higher-order section with harder questions. Section names, question counts and marking rules can change, so check the current pattern for your exam on the organiser's official website.

Strong school marks, but tricky Olympiad questions? That's normal

It is very common for a student who scores well in school to find Olympiad questions harder at first. This does not mean anything is wrong. It simply means a new skill, applying concepts quickly in new situations, needs practice. That skill grows steadily with the right kind of practice.

Sample Questions with Worked Solutions

The questions below were written for this article to show the Olympiad style. They are not taken from any real past paper. The class levels are approximate.

Question 1: Fractions (around Class 5–6)

Riya ate 1/3 of a pizza. Her brother then ate 1/2 of what was left. What fraction of the whole pizza remains?

(A) 1/6 (B) 1/3 (C) 1/2 (D) 2/3

Solution: After Riya eats 1/3, the part left is 1 − 1/3 = 2/3. Her brother eats half of that, which is 1/2 × 2/3 = 1/3. So the part remaining is 2/3 − 1/3 = 1/3. Answer: (B).

Common wrong answer: (A) 1/6. Students calculate 1 − 1/3 − 1/2, treating the brother's half as half of the whole pizza. The words 'of what was left' are the twist. Always ask yourself: half of what?

Question 2: Linear equations (around Class 8)

A mother is 3 times as old as her daughter. In 12 years, she will be twice as old as her daughter. How old is the daughter now?

(A) 6 years (B) 10 years (C) 12 years (D) 24 years

Solution: Let the daughter's age be x. The mother's age is 3x. In 12 years: 3x + 12 = 2(x + 12). This gives 3x + 12 = 2x + 24, so x = 12. Answer: (C). Check: mother is 36 now; in 12 years she is 48 and the daughter is 24, and 48 is twice 24. ✔

Common wrong answer: (D) 24. Some students solve correctly but give the daughter's age in 12 years, or the mother's and daughter's ages get mixed up. Others forget to add 12 to the daughter's age too. Reread what the question asks before choosing an option. For more of this style, try these word problems on linear equations.

Question 3: Science application (around Class 6–8)

A steel spoon and a wooden spoon have been lying in the same room all night. In the morning, the steel spoon feels colder to touch. Why?

(A) The steel spoon is at a lower temperature than the wooden spoon. (B) Steel carries heat away from your hand faster than wood. (C) Wood produces its own heat. (D) Steel absorbs cold from the air.

Solution: Both spoons have been in the same room overnight, so they are at the same temperature. Steel is a good conductor of heat, so it draws heat away from your warm hand quickly, and your hand feels this as 'cold'. Wood is a poor conductor, so it doesn't. Answer: (B).

Common wrong answer: (A). It feels like common sense, but the question tells you both spoons were in the same room all night. Olympiad questions often hide the key clue in the setup.

Question 4: Logical reasoning (around Class 3–5)

What comes next? 2, 3, 5, 8, 12, 17, ?

(A) 22 (B) 23 (C) 25 (D) 29

Solution: Look at the gaps between numbers: +1, +2, +3, +4, +5. The next gap is +6, so 17 + 6 = 23. Answer: (B).

Common wrong answers: (D) 29 and (A) 22. The first four numbers (2, 3, 5, 8) look like a pattern where you add the two previous numbers. Students who spot this early pick 12 + 17 = 29 without checking the whole series. Others add 5 again to get 22. Always test your rule on every number in the series.

How Many Practice Questions Should You Solve?

There is no official or proven number. Anyone who gives you an exact figure is guessing. A better approach is to track three things:

• Topic coverage: have you practised every topic in your class syllabus at least once?

• Accuracy trend: are you making fewer mistakes in a topic over time?

• Mistake review: do you understand every question you got wrong?

A practical rule of thumb: keep practising a topic until mistakes become rare and you can explain the reasoning behind each answer. Then move on, and return to it later for a quick check.

Quality beats quantity. Fifty questions solved carefully, with every mistake understood, can teach you far more than 200 questions rushed through just to finish a book.

A Simple Practice Routine: Topic Questions to Full Mock Tests

Think of preparation in three phases.

Phase 1: Topic-wise practice (untimed)

Practise Olympiad-style questions on each chapter as you study it in school. Don't use a timer yet. The goal is understanding, so take your time and read every explanation.

Phase 2: Mixed sets with a light time limit

Once several topics are covered, solve mixed sets of 10–15 questions from different chapters. Add a relaxed time limit. Mixed sets train you to recognise which concept a question needs, just as you will have to in the real exam.

Phase 3: Full-length timed mock tests

Closer to the exam, take full-length mock tests in exam-like conditions. The real learning happens in the review afterwards. We have a separate guide on how to take and analyse an Olympiad mock test, so we won't repeat it here.

A sample weekly schedule

This plan fits around school homework. Adjust it freely, as consistency matters more than following it exactly.

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Practise with free Olympiad mock tests

Try OlympiadIQ's Free Unlimited Mock Tests and find out which topics need more practice.

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How to Practise for IMO and NSO Specifically

For IMO (maths)

• Strengthen core topics from your school syllabus first. Most Olympiad maths questions are built on concepts you already learn in class, applied in trickier ways. Our free maths topic pages by class are handy for quick revision.

• Build mental maths speed. Practise quick calculations, fraction comparisons and estimation so you save time in the exam.

• Practise reasoning questions. Patterns, series, analogies and figure puzzles reward regular practice.

For NSO (science)

• Focus on applying concepts, not memorising definitions. Ask 'why does this happen?' about everyday situations, such as why ice floats or why steel feels cold.

• Practise reading diagrams. Labelled figures, graphs and experiment setups appear often in science questions.

• Connect science to daily life. Kitchen, weather and body-related situations make excellent practice material. Revise concepts with our science topics by class.

The same approach works for IEO (English) and NCO (cyber/computers): learn the concept, apply it in unfamiliar questions, then add time pressure. Check the current exam pattern for each Olympiad on the organiser's official website before planning your practice around specific sections.

Common Practice Mistakes (and How to Fix Them)

1. Checking answers without understanding why

Fix: For every wrong answer, write one line explaining the correct reasoning. If you can't, ask a teacher or parent, or use an AI tutor to explain it step by step.

2. Practising only easy or familiar topics

Fix: Spend at least one session a week on your weakest topic. It feels harder, but that's where your score improves most.

3. Never practising under time limits

Fix: Once a topic feels comfortable, add a timer. Speed is part of the skill Olympiads test.

4. Skipping the reasoning section

Fix: Treat reasoning as its own subject. A few puzzles a week make a real difference, and games like our Pattern Blitz reasoning game make it fun.

5. Not keeping an error log

Fix: Keep a simple notebook or sheet like this one, and review it every week:

Label each mistake as a concept gap, misread question, calculation slip or ran out of time. Patterns will appear quickly and tell you exactly what to work on.

How Parents Can Support Practice at Home

• Keep sessions short and regular. For younger children, 15–20 relaxed minutes a few times a week works better than a long weekend session. Pick a challenge level that stretches your child without frustrating them.

• Review mistakes together, not scores. Ask 'How did you think about this one?' rather than 'Why did you get it wrong?' This builds confidence and thinking skills.

• Use low-pressure, playful practice. Brain games and friendly quiz battles with friends or siblings keep motivation up and make practice feel like play.

• Celebrate effort and improvement. An Olympiad is a chance to learn and explore, and every child grows at their own pace.

FAQs

Are free Olympiad practice tests good enough?

They can be, if the questions are Olympiad-style, match your class and come with explanations. Combine them with the organiser's official sample papers where available, and focus on reviewing mistakes carefully.

When should my child start practising before the exam?

There is no fixed rule. Starting early enough to practise topic-wise alongside school chapters makes preparation calmer and spreads the work out. If time is short, focus on core topics, reasoning and a few timed mixed sets.

Should practice questions be from my exact class or a higher class?

Start with questions from your own class, because Olympiads are usually based on the class syllabus. Once you're comfortable, a few harder stretch questions can help, but they shouldn't replace class-level practice.

Can I prepare for Olympiads using only school books?

School books build the concepts you need, so they are an important foundation. However, they rarely include Olympiad-style application and reasoning questions, so add some Olympiad-specific practice.

Conclusion

The best Olympiad practice questions are Olympiad-style, explained clearly and matched to your class. Start with topic-wise practice, move on to mixed timed sets, and finish with full mock tests, reviewing every mistake along the way. Keep it steady, keep it curious, and enjoy watching your thinking get sharper week by week.