IMMC (International Mental Math Challenge Series) 2026 is a worldwide online competition organized by Buddhi Booster to encourage children to develop speed, accuracy, concentration, and mental calculation skills. This championship provides a platform for young learners to showcase their mental math abilities and compete with students from different regions.

• To promote Mental Math skills among children worldwide.
• To improve speed, accuracy and concentration.
• To build confidence and competitive spirit.
• To provide a global platform for students.

• Junior Challenger: 5–8 Years
• Senior Challenger: 9–12 Years
• Advanced Challenger: 13+ Years

• Junior Challenger: 19 June 2026
• Senior Challenger: 20 June 2026
• Advanced Challenger: 21 June 2026

Note: Timing will be announced one week before.

• Conducted online.
• Accessible worldwide.
• Via Buddhi Booster Mobile Application.
• Available on Android & iOS.

Mental Math Based

• Addition, Subtraction
• Multiplication, Division
• Mixed calculations

Practice access will be provided through the Buddhi Booster App before the competition.

• Digital certificate for all participants.
• Medals for top performers.

Fee: ₹500 per participant

Practice materials will be shared after verification.

• Create ID & password after registration.
• App available on Play Store & App Store.

• 100 questions (10 marks each).
• No negative marking.
• 10 minutes per round.
• One device per student.

• No external help allowed.
• Late submission not accepted.
• Do not press back button.
• Stable internet required.

• Results by mid-July.
• No re-evaluation.
• Fee is non-refundable.