The term "sum" refers to the result of adding two or more numbers together. For example, if you add 2 and 3, the sum is 5. This basic mathematical operation is essential in everyday life, from calculating expenses to measuring ingredients in cooking. In a broader sense, "sum" can also refer to the total amount of something. For instance, if you have a collection of books, the sum of your collection would be the total number of books you own. Understanding sums helps us make sense of quantities and manage resources effectively.