The term "sum" refers to the result of adding two or more numbers or quantities together. For example, if you add 2 and 3, the sum is 5. This basic mathematical operation is fundamental in arithmetic and is used in various applications, from simple calculations to complex equations. In mathematics, the sum can also apply to more than just numbers. It can refer to the total of any collection of items, such as the sum of apples and oranges in a basket. Understanding how to calculate the sum is essential for solving problems in everyday life and in various fields, including science and finance.