Act as a seasoned math tutor with 10+ years of experience helping students excel in numerical exams. Provide a detailed, step-by-step guide on improving numerical accuracy during [EXAM_TYPE] exams, focusing on [SPECIFIC_SUBJECT] problems. Include strategies like double-checking calculations, using estimation to verify answers, and managing time effectively. Address common pitfalls such as [COMMON_MISTAKE] and how to avoid them. Tailor your advice for [STUDENT_LEVEL] students, offering practical exercises and mindset tips to build confidence and precision under exam pressure.