IMO Important Questions for 2025-26 Exam

IMO Important Questions for 2025-26 Exam: The International Mathematics Olympiad (IMO) organized by the Science Olympiad Foundation (SOF) is one of the most prestigious school-level competitive exams in India. With lakhs of students appearing from across the globe, preparing well for IMO becomes crucial. One of the best ways to ensure success is by practicing IMO important questions that align with the latest syllabus and pattern.

In this article, we’ll discuss class-wise important questions, chapter-wise distribution, sample tables, and tips to identify crucial concepts to help you prepare effectively for the IMO 2025-26 exam.

Why Focus on IMO Important Questions 2025-26?

Important questions are those that are most likely to appear in the exam or are based on frequently tested concepts. They help students:

• Strengthen conceptual clarity.

• Manage time effectively during the exam.

• Understand recurring patterns in question framing.

• Focus on high-weightage topics.

Class-wise Important Questions (Class 1 to 12) for IMO 2025-26

To make your preparation more structured, here’s a breakdown of important topics and sample questions for each class based on the previous year trends and SOF syllabus guidelines.

IMO Important Questions for Class 1

For Class 1 students, the IMO focuses on building a strong foundation in basic number skills, patterns, measurements, and logical reasoning. Practicing important questions helps young learners develop problem-solving habits early.

Sample Questions:

• What comes after 59 and before 61?

• Add: 34 + 25 = ?

• Which shape has 4 equal sides?

• Which is longer: a pencil or a truck?

IMO Important Questions for Class 2

In Class 2, students are introduced to slightly more advanced topics like money, time, patterns, and data handling. Focusing on IMO-specific questions ensures mastery of concepts and speed.

Sample Questions:

• Write the number name for 639.

• Subtract: 912 – 478 = ?

• Which coin combinations make ₹10?

• What comes next in the pattern: 2, 4, 6, 8, ___?

IMO Important Questions for Class 3

Class 3 introduces multiplication, division, basic geometry, and more analytical problems. IMO questions at this level test the application of math in real-life scenarios.

Sample Questions:

• Multiply: 13 × 4 = ?

• Find the perimeter of a rectangle with sides 6 cm and 8 cm.

• Which fraction is bigger: 1/3 or 3/4?

• How many faces does a cube have?

IMO Important Questions for Class 4

Class 4 IMO questions begin to focus more on logical reasoning and deeper mathematical understanding, especially in topics like LCM, HCF, decimals, and angles.

Sample Questions:

• Find the LCM of 8 and 12.

• Add: 12.4 + 5.6 = ?

• How many degrees in a right angle?

• Identify the line of symmetry in a rectangle.

IMO Important Questions for Class 5

The syllabus in Class 5 becomes more structured with advanced topics like volume, percentage, average, and unit conversions. Practicing such questions prepares students for competitive scenarios.

Sample Questions:

• Find 25% of 200.

• Convert 500 ml to liters.

• Volume of a cube with side 3 cm?

• Mean of: 12, 15, 18, 21, 24?

IMO Important Questions for Class 6

Class 6 IMO includes Algebra, Geometry, Integers, and Mensuration. These questions aim to test logical application rather than just theoretical knowledge.

Sample Questions:

• Solve: 3x + 5 = 14

• Find area of a square with side 9 cm.

• Classify triangle based on sides: 5 cm, 5 cm, 7 cm

• What is the coordinate of origin?

IMO Important Questions for Class 7

Class 7 IMO questions emphasize algebraic expressions, linear equations, percentage, and data interpretation. Speed and accuracy are key at this level.

Sample Questions:

• Simplify: 2a + 3a – a

• What is 15% of ₹2000?

• Solve: x/3 = 7

• Identify median of: 7, 3, 9, 1, 5

IMO Important Questions for Class 8

The focus in Class 8 shifts to higher-order thinking through rational numbers, algebraic identities, and graphical representation of data.

Sample Questions:

• Evaluate: (x + y)² when x = 2, y = 3

• Convert 2/5 to decimal.

• Solve: 3/4x = 9

• Draw a bar graph for the given data: Apples – 10, Bananas – 15, Grapes – 5

IMO Important Questions for Class 9

Class 9 IMO questions start reflecting board-level difficulty, including real numbers, polynomials, and coordinate geometry. Understanding NCERT concepts deeply is essential.

Sample Questions:

• Find the zeros of the polynomial: x² – 5x + 6

• Distance between points A(3, 4) and B(6, 8)?

• What is the degree of the polynomial: x³ – 2x + 1?

• Define a rational number with an example.

IMO Important Questions for Class 10

IMO questions in Class 10 aim to blend board topics with Olympiad logic, focusing on trigonometry, quadratic equations, statistics, and surface areas.

Sample Questions:

• Solve: x² – 7x + 10 = 0

• Find sin 60°

• Mean of: 10, 20, 30, 40, 50

• Surface area of a sphere with radius 7 cm?

IMO Important Questions for Class 11

Class 11 covers Sets, Relations, Functions, Complex Numbers, and Probability. IMO at this level tests fundamental reasoning and mathematical maturity.

Sample Questions:

• If A = {1,2,3}, B = {3,4,5}, find A ∩ B

• What is the domain of f(x) = 1/x?

• Find the probability of getting a multiple of 3 on a dice roll.

• Differentiate: f(x) = x²

IMO Important Questions for Class 12

Class 12 IMO challenges include Integration, Differentiation, Determinants, and Linear Programming. These questions assess analytical problem-solving and calculus fundamentals.

Sample Questions:

• Evaluate: ∫x² dx

• Find the maximum value of f(x) = –x² + 4x

• Calculate determinant of:
  |1 2|
  |3 4|

• Probability of drawing a red card from a deck?

Tips to Use IMO Important Questions Effectively

To get the most out of these questions, students must:

1. Solve topic-wise: Focus on one chapter at a time and complete its important questions before moving on.

2. Track progress: Maintain a notebook to track solved and unsolved questions.

3. Understand the logic: Don’t just memorize answers. Focus on understanding the concept behind each solution.

4. Time-bound practice: Try to solve questions in a set time to improve speed.

5. Seek explanations: Use solutions or guides to understand how to approach tricky problems.

Importance of Practicing with Solutions

Practicing questions with detailed solutions is essential. It:

• Builds problem-solving techniques.

• Helps in identifying common mistakes.

• Prepares students for higher-order thinking questions in Achievers Section.

• Gives insight into question-solving approaches used by toppers.

Conclusion

Preparing for the IMO 2025-26 exam becomes easier and more effective when you consistently practice the most important questions. Whether you are in Class 1 or Class 12, these questions help solidify your core concepts and enhance your ability to tackle Olympiad-level problems.

Use this article as your go-to guide for the most probable and impactful questions that can shape your Olympiad journey. Stay consistent, analyze your mistakes, and most importantly – practice with focus.

IMO Important Questions for 2025-26 Exam FAQs