Addition is the process of combining two or more quantities together. It is a mathematical operation denoted by the symbol ���+���, which is referred to as the plus sign. In verbal expressions, the terms ���plus,��� ���sum,��� ���total,��� ���more than��� and ���increased by��� are synonymous with addition.Continue Reading
For example, placing three marbles with four marbles yields a sum of seven marbles. This is written in mathematical notation as ���3 + 4 = 7��� and is read as ���three plus four equals seven."
Addition can also signify the joining of physical and abstract quantities, such as negative numbers, irrational numbers, variables, fractions, vectors, functions and others.Learn more about K-12 Curriculum