The term "add" refers to the mathematical operation of combining two or more numbers to obtain a total. For example, when you add 2 and 3, the result is 5. This operation is fundamental in arithmetic and is often one of the first concepts taught in mathematics. In everyday life, we use addition frequently, such as when calculating expenses or measuring ingredients in cooking. The symbol for addition is the plus sign (+), and it is essential for more complex mathematical concepts, including subtraction, multiplication, and division.