Mental math refers to the ability to perform calculations in your head without the use of a calculator or paper. This skill involves using strategies like estimation, number sense, and visualization to solve problems quickly and accurately. It is useful in everyday situations, such as budgeting, shopping, or cooking. Practicing mental math can enhance cognitive skills and improve overall mathematical understanding. Techniques like breaking numbers into smaller parts or using known facts can make calculations easier. Many educators encourage mental math to help students build confidence and develop a strong foundation in mathematics.