The expression "5 × 5" represents a multiplication problem where the number 5 is added to itself five times. In simpler terms, it means you have five groups of five. The result of this multiplication is 25, which is the total amount when you combine all the groups. Multiplication is one of the basic operations in mathematics, alongside addition, subtraction, and division. It is often used in various fields, including science, finance, and engineering, to simplify calculations and solve problems efficiently. Understanding multiplication helps build a strong foundation for more advanced mathematical concepts.