A mathematical error refers to a mistake made during calculations or problem-solving in mathematics. These errors can occur at any stage, such as misreading a problem, misapplying a formula, or making a simple arithmetic mistake. They can lead to incorrect answers and affect the overall understanding of mathematical concepts. Common types of mathematical errors include calculation errors, conceptual errors, and transcription errors. Calculation errors happen when numbers are added, subtracted, multiplied, or divided incorrectly. Conceptual errors arise from misunderstandings of mathematical principles, while transcription errors occur when numbers are copied incorrectly from one place to another.