Learn what is addition , how to perform it using different methods and symbols, and its properties and applications. Find examples, worksheets and word problems on addition for primary school students. Addition is a basic arithmetic operator in mathematics, along with three other operations, namely subtraction, multiplication, and division. It is a process of adding two or more values. It is a practical skill that we use daily in our lives, even if we don’t notice it. In math, addition is the method of calculating the total of two or more numbers to know the sum of the numbers . Learn how to do addition and solve the real-life addition word problems with the help of examples.