This book gathers 50 introductory-level exercises posed during different competitions (UKMT, SMO, AMC, ...). All exercises are corrected in detail to assimilate the essential and useful notions to know. The inclusion of problems from various contests ensures a well-rounded exposure to different styles and difficulty levels, preparing readers for the rigors of mathematical challenges at every stage. Whether you are a student preparing for a competition, an educator seeking supplemental material, or a mathematics enthusiast eager for a mental workout, "Junior Maths Olympiad " promises an enriching and intellectually stimulating experience. Immerse yourself in the beauty of mathematical problem-solving and elevate your skills with this exceptional collection of contest-style exercises. Here are some of the benefits of participating in junior Olympiads or any math contests: - Develop a taste for mathematics: Junior Olympiads can help students develop a love of mathematics by exposing them to challenging problems that require creativity and problem-solving skills. - Learn new mathematical concepts: Junior Olympiads often require students to learn new mathematical concepts that they may not have encountered in school. This can help students expand their mathematical knowledge and become more well-rounded mathematicians. - Improve problem-solving skills: Junior Olympiads require students to develop strong problem-solving skills. This can be a valuable skill for students to have in any field, as it can help them think critically and creatively to solve problems. - Gain confidence: participating in junior Olympiads can help students gain confidence in their mathematical abilities. This can be a valuable asset for students, as it can help them succeed in school and in other areas of their lives.