A sum is the result of adding two or more numbers together. For example, if you add 2 and 3, the sum is 5. Sums are a fundamental concept in mathematics and are used in various everyday situations, such as calculating expenses or measuring distances. In addition to simple sums, there are also more complex sums involving larger numbers or multiple addends. For instance, the sum of 1, 2, 3, and 4 is 10. Understanding sums is essential for solving problems in arithmetic, algebra, and many other areas of math.